diff --git a/sandboxed_api/embed_file.cc b/sandboxed_api/embed_file.cc
index 6d8868f..a4039a0 100644
--- a/sandboxed_api/embed_file.cc
+++ b/sandboxed_api/embed_file.cc
@@ -27,6 +27,7 @@
 #include "sandboxed_api/sandbox2/util/fileops.h"
 #include "sandboxed_api/sandbox2/util/strerror.h"
 #include "sandboxed_api/util/raw_logging.h"
+#include "sandboxed_api/util/canonical_errors.h"
 #include "sandboxed_api/util/status.h"
 
 namespace file_util = ::sandbox2::file_util;
diff --git a/sandboxed_api/examples/stringop/main_stringop.cc b/sandboxed_api/examples/stringop/main_stringop.cc
index 2a431c8..84d63d7 100644
--- a/sandboxed_api/examples/stringop/main_stringop.cc
+++ b/sandboxed_api/examples/stringop/main_stringop.cc
@@ -28,6 +28,7 @@
 #include "sandboxed_api/transaction.h"
 #include "sandboxed_api/util/status_matchers.h"
 #include "sandboxed_api/vars.h"
+#include "sandboxed_api/util/canonical_errors.h"
 #include "sandboxed_api/util/status.h"
 #include "sandboxed_api/util/status_macros.h"
 
diff --git a/sandboxed_api/examples/sum/main_sum.cc b/sandboxed_api/examples/sum/main_sum.cc
index 631c3f0..662acd9 100644
--- a/sandboxed_api/examples/sum/main_sum.cc
+++ b/sandboxed_api/examples/sum/main_sum.cc
@@ -25,6 +25,7 @@
 #include "sandboxed_api/examples/sum/lib/sum_params.pb.h"
 #include "sandboxed_api/transaction.h"
 #include "sandboxed_api/vars.h"
+#include "sandboxed_api/util/canonical_errors.h"
 #include "sandboxed_api/util/status.h"
 
 namespace {
diff --git a/sandboxed_api/proto_helper.h b/sandboxed_api/proto_helper.h
index c9080ee..453ceb1 100644
--- a/sandboxed_api/proto_helper.h
+++ b/sandboxed_api/proto_helper.h
@@ -22,6 +22,7 @@
 #include <vector>
 
 #include "sandboxed_api/proto_arg.pb.h"
+#include "sandboxed_api/util/canonical_errors.h"
 #include "sandboxed_api/util/status.h"
 #include "sandboxed_api/util/statusor.h"
 
diff --git a/sandboxed_api/rpcchannel.cc b/sandboxed_api/rpcchannel.cc
index 21fcd47..f148516 100644
--- a/sandboxed_api/rpcchannel.cc
+++ b/sandboxed_api/rpcchannel.cc
@@ -19,6 +19,7 @@
 #include "absl/synchronization/mutex.h"
 #include "sandboxed_api/call.h"
 #include "sandboxed_api/sandbox2/comms.h"
+#include "sandboxed_api/util/canonical_errors.h"
 #include "sandboxed_api/util/status_macros.h"
 
 namespace sapi {
diff --git a/sandboxed_api/sandbox.cc b/sandboxed_api/sandbox.cc
index 2598052..6fa2615 100644
--- a/sandboxed_api/sandbox.cc
+++ b/sandboxed_api/sandbox.cc
@@ -39,6 +39,7 @@
 #include "sandboxed_api/sandbox2/util/fileops.h"
 #include "sandboxed_api/sandbox2/util/path.h"
 #include "sandboxed_api/sandbox2/util/runfiles.h"
+#include "sandboxed_api/util/canonical_errors.h"
 #include "sandboxed_api/util/status_macros.h"
 
 namespace file = ::sandbox2::file;
diff --git a/sandboxed_api/sandbox2/buffer.cc b/sandboxed_api/sandbox2/buffer.cc
index 6cedccf..170ddce 100644
--- a/sandboxed_api/sandbox2/buffer.cc
+++ b/sandboxed_api/sandbox2/buffer.cc
@@ -24,6 +24,7 @@
 #include "absl/strings/str_cat.h"
 #include "sandboxed_api/sandbox2/util.h"
 #include "sandboxed_api/sandbox2/util/strerror.h"
+#include "sandboxed_api/util/canonical_errors.h"
 
 namespace sandbox2 {
 
diff --git a/sandboxed_api/sandbox2/client.cc b/sandboxed_api/sandbox2/client.cc
index f8490eb..235ec19 100644
--- a/sandboxed_api/sandbox2/client.cc
+++ b/sandboxed_api/sandbox2/client.cc
@@ -44,6 +44,7 @@
 #include "sandboxed_api/sandbox2/sanitizer.h"
 #include "sandboxed_api/sandbox2/util/strerror.h"
 #include "sandboxed_api/util/raw_logging.h"
+#include "sandboxed_api/util/canonical_errors.h"
 
 namespace sandbox2 {
 
diff --git a/sandboxed_api/sandbox2/forkserver.cc b/sandboxed_api/sandbox2/forkserver.cc
index ab6ece4..205cf22 100644
--- a/sandboxed_api/sandbox2/forkserver.cc
+++ b/sandboxed_api/sandbox2/forkserver.cc
@@ -57,6 +57,7 @@
 #include "sandboxed_api/sandbox2/util/fileops.h"
 #include "sandboxed_api/sandbox2/util/strerror.h"
 #include "sandboxed_api/util/raw_logging.h"
+#include "sandboxed_api/util/canonical_errors.h"
 #include "sandboxed_api/util/status.h"
 #include "sandboxed_api/util/statusor.h"
 
diff --git a/sandboxed_api/sandbox2/mounts.cc b/sandboxed_api/sandbox2/mounts.cc
index 7579c09..ab18403 100644
--- a/sandboxed_api/sandbox2/mounts.cc
+++ b/sandboxed_api/sandbox2/mounts.cc
@@ -38,6 +38,7 @@
 #include "sandboxed_api/sandbox2/util/path.h"
 #include "sandboxed_api/sandbox2/util/strerror.h"
 #include "sandboxed_api/util/raw_logging.h"
+#include "sandboxed_api/util/canonical_errors.h"
 #include "sandboxed_api/util/status_macros.h"
 #include "sandboxed_api/util/statusor.h"
 
diff --git a/sandboxed_api/sandbox2/network_proxy_client.cc b/sandboxed_api/sandbox2/network_proxy_client.cc
index cae5d65..5e214e9 100644
--- a/sandboxed_api/sandbox2/network_proxy_client.cc
+++ b/sandboxed_api/sandbox2/network_proxy_client.cc
@@ -27,6 +27,7 @@
 #include "absl/memory/memory.h"
 #include "absl/strings/str_cat.h"
 #include "sandboxed_api/sandbox2/util/strerror.h"
+#include "sandboxed_api/util/canonical_errors.h"
 #include "sandboxed_api/util/status.h"
 #include "sandboxed_api/util/status_macros.h"
 
diff --git a/sandboxed_api/sandbox2/policybuilder.cc b/sandboxed_api/sandbox2/policybuilder.cc
index bde3f6f..c731e97 100644
--- a/sandboxed_api/sandbox2/policybuilder.cc
+++ b/sandboxed_api/sandbox2/policybuilder.cc
@@ -39,6 +39,7 @@
 #include "sandboxed_api/sandbox2/namespace.h"
 #include "sandboxed_api/sandbox2/util/bpf_helper.h"
 #include "sandboxed_api/sandbox2/util/path.h"
+#include "sandboxed_api/util/canonical_errors.h"
 #include "sandboxed_api/util/status_macros.h"
 
 namespace sandbox2 {
diff --git a/sandboxed_api/sandbox2/regs.cc b/sandboxed_api/sandbox2/regs.cc
index 4292ebb..3735ed8 100644
--- a/sandboxed_api/sandbox2/regs.cc
+++ b/sandboxed_api/sandbox2/regs.cc
@@ -25,6 +25,7 @@
 
 #include "absl/strings/str_cat.h"
 #include "sandboxed_api/sandbox2/util/strerror.h"
+#include "sandboxed_api/util/canonical_errors.h"
 
 namespace sandbox2 {
 
diff --git a/sandboxed_api/sandbox2/result.cc b/sandboxed_api/sandbox2/result.cc
index f359822..1fa194f 100644
--- a/sandboxed_api/sandbox2/result.cc
+++ b/sandboxed_api/sandbox2/result.cc
@@ -19,6 +19,7 @@
 #include "absl/strings/str_cat.h"
 #include "sandboxed_api/sandbox2/syscall.h"
 #include "sandboxed_api/sandbox2/util.h"
+#include "sandboxed_api/util/canonical_errors.h"
 
 namespace sandbox2 {
 
diff --git a/sandboxed_api/sandbox2/sandbox2.cc b/sandboxed_api/sandbox2/sandbox2.cc
index 0a730ba..8f066cd 100644
--- a/sandboxed_api/sandbox2/sandbox2.cc
+++ b/sandboxed_api/sandbox2/sandbox2.cc
@@ -24,6 +24,7 @@
 #include "absl/time/time.h"
 #include "sandboxed_api/sandbox2/monitor.h"
 #include "sandboxed_api/sandbox2/result.h"
+#include "sandboxed_api/util/canonical_errors.h"
 
 namespace sandbox2 {
 
diff --git a/sandboxed_api/sandbox2/util.cc b/sandboxed_api/sandbox2/util.cc
index f490b96..e43cf0a 100644
--- a/sandboxed_api/sandbox2/util.cc
+++ b/sandboxed_api/sandbox2/util.cc
@@ -43,6 +43,7 @@
 #include "sandboxed_api/sandbox2/util/path.h"
 #include "sandboxed_api/sandbox2/util/strerror.h"
 #include "sandboxed_api/util/raw_logging.h"
+#include "sandboxed_api/util/canonical_errors.h"
 
 namespace sandbox2 {
 namespace util {
diff --git a/sandboxed_api/sandbox2/util/maps_parser.cc b/sandboxed_api/sandbox2/util/maps_parser.cc
index a1b8bff..d6314a9 100644
--- a/sandboxed_api/sandbox2/util/maps_parser.cc
+++ b/sandboxed_api/sandbox2/util/maps_parser.cc
@@ -14,6 +14,7 @@
 
 #include "sandboxed_api/sandbox2/util/maps_parser.h"
 #include "absl/strings/str_split.h"
+#include "sandboxed_api/util/canonical_errors.h"
 
 namespace sandbox2 {
 
diff --git a/sandboxed_api/sandbox2/util/minielf.cc b/sandboxed_api/sandbox2/util/minielf.cc
index d392a7e..3aa47b0 100644
--- a/sandboxed_api/sandbox2/util/minielf.cc
+++ b/sandboxed_api/sandbox2/util/minielf.cc
@@ -25,6 +25,7 @@
 #include "sandboxed_api/sandbox2/util.h"
 #include "sandboxed_api/sandbox2/util/strerror.h"
 #include "sandboxed_api/util/raw_logging.h"
+#include "sandboxed_api/util/canonical_errors.h"
 #include "sandboxed_api/util/status.h"
 #include "sandboxed_api/util/status_macros.h"
 
diff --git a/sandboxed_api/sandbox2/util/temp_file.cc b/sandboxed_api/sandbox2/util/temp_file.cc
index 04dbae9..552e79c 100644
--- a/sandboxed_api/sandbox2/util/temp_file.cc
+++ b/sandboxed_api/sandbox2/util/temp_file.cc
@@ -25,6 +25,7 @@
 #include "absl/strings/str_cat.h"
 #include "sandboxed_api/sandbox2/util/fileops.h"
 #include "sandboxed_api/sandbox2/util/strerror.h"
+#include "sandboxed_api/util/canonical_errors.h"
 
 namespace sandbox2 {
 
diff --git a/sandboxed_api/transaction.cc b/sandboxed_api/transaction.cc
index f4f6d15..b2d4bd1 100644
--- a/sandboxed_api/transaction.cc
+++ b/sandboxed_api/transaction.cc
@@ -13,6 +13,7 @@
 // limitations under the License.
 
 #include "sandboxed_api/transaction.h"
+#include "sandboxed_api/util/canonical_errors.h"
 #include "sandboxed_api/util/status_macros.h"
 
 namespace sapi {
diff --git a/sandboxed_api/transaction.h b/sandboxed_api/transaction.h
index 4cbb382..4edab9e 100644
--- a/sandboxed_api/transaction.h
+++ b/sandboxed_api/transaction.h
@@ -21,6 +21,7 @@
 #include "absl/strings/str_cat.h"
 #include "absl/time/time.h"
 #include "sandboxed_api/sandbox.h"
+#include "sandboxed_api/util/canonical_errors.h"
 #include "sandboxed_api/util/status.h"
 #include "sandboxed_api/util/status_macros.h"
 
diff --git a/sandboxed_api/util/BUILD.bazel b/sandboxed_api/util/BUILD.bazel
index 36a53c5..e7b165c 100644
--- a/sandboxed_api/util/BUILD.bazel
+++ b/sandboxed_api/util/BUILD.bazel
@@ -28,8 +28,12 @@ sapi_proto_library(
 # replaced once Abseil releases absl::Status.
 cc_library(
     name = "status",
-    srcs = ["status.cc"],
+    srcs = [
+        "canonical_errors.cc",
+        "status.cc",
+    ],
     hdrs = [
+        "canonical_errors.h",
         "status.h",
         "status_internal.h",
         "status_macros.h",
diff --git a/sandboxed_api/util/CMakeLists.txt b/sandboxed_api/util/CMakeLists.txt
index 4206565..e7b485e 100644
--- a/sandboxed_api/util/CMakeLists.txt
+++ b/sandboxed_api/util/CMakeLists.txt
@@ -28,6 +28,8 @@ target_link_libraries(sapi_util_status_proto
 
 # sandboxed_api/util:status
 add_library(sapi_util_status STATIC
+  canonical_errors.cc
+  canonical_errors.h
   status.cc
   status.h
   status_internal.h
diff --git a/sandboxed_api/util/canonical_errors.cc b/sandboxed_api/util/canonical_errors.cc
new file mode 100644
index 0000000..651e62d
--- /dev/null
+++ b/sandboxed_api/util/canonical_errors.cc
@@ -0,0 +1,117 @@
+// Copyright 2019 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "sandboxed_api/util/canonical_errors.h"
+
+namespace sapi {
+
+Status AbortedError(absl::string_view message) {
+  return Status{StatusCode::kAborted, message};
+}
+Status AlreadyExistsError(absl::string_view message) {
+  return Status{StatusCode::kAlreadyExists, message};
+}
+Status CancelledError(absl::string_view message) {
+  return Status{StatusCode::kCancelled, message};
+}
+Status DataLossError(absl::string_view message) {
+  return Status{StatusCode::kDataLoss, message};
+}
+Status DeadlineExceededError(absl::string_view message) {
+  return Status{StatusCode::kDeadlineExceeded, message};
+}
+Status FailedPreconditionError(absl::string_view message) {
+  return Status{StatusCode::kFailedPrecondition, message};
+}
+Status InternalError(absl::string_view message) {
+  return Status{StatusCode::kInternal, message};
+}
+Status InvalidArgumentError(absl::string_view message) {
+  return Status{StatusCode::kInvalidArgument, message};
+}
+Status NotFoundError(absl::string_view message) {
+  return Status{StatusCode::kNotFound, message};
+}
+Status OutOfRangeError(absl::string_view message) {
+  return Status{StatusCode::kOutOfRange, message};
+}
+Status PermissionDeniedError(absl::string_view message) {
+  return Status{StatusCode::kPermissionDenied, message};
+}
+Status ResourceExhaustedError(absl::string_view message) {
+  return Status{StatusCode::kResourceExhausted, message};
+}
+Status UnauthenticatedError(absl::string_view message) {
+  return Status{StatusCode::kUnauthenticated, message};
+}
+Status UnavailableError(absl::string_view message) {
+  return Status{StatusCode::kUnavailable, message};
+}
+Status UnimplementedError(absl::string_view message) {
+  return Status{StatusCode::kUnimplemented, message};
+}
+Status UnknownError(absl::string_view message) {
+  return Status{StatusCode::kUnknown, message};
+}
+
+bool IsAborted(const Status& status) {
+  return status.code() == StatusCode::kAborted;
+}
+bool IsAlreadyExists(const Status& status) {
+  return status.code() == StatusCode::kAlreadyExists;
+}
+bool IsCancelled(const Status& status) {
+  return status.code() == StatusCode::kCancelled;
+}
+bool IsDataLoss(const Status& status) {
+  return status.code() == StatusCode::kDataLoss;
+}
+bool IsDeadlineExceeded(const Status& status) {
+  return status.code() == StatusCode::kDeadlineExceeded;
+}
+bool IsFailedPrecondition(const Status& status) {
+  return status.code() == StatusCode::kFailedPrecondition;
+}
+bool IsInternal(const Status& status) {
+  return status.code() == StatusCode::kInternal;
+}
+bool IsInvalidArgument(const Status& status) {
+  return status.code() == StatusCode::kInvalidArgument;
+}
+bool IsNotFound(const Status& status) {
+  return status.code() == StatusCode::kNotFound;
+}
+bool IsOutOfRange(const Status& status) {
+  return status.code() == StatusCode::kOutOfRange;
+}
+bool IsPermissionDenied(const Status& status) {
+  return status.code() == StatusCode::kPermissionDenied;
+}
+bool IsResourceExhausted(const Status& status) {
+  return status.code() == StatusCode::kResourceExhausted;
+}
+bool IsUnauthenticated(const Status& status) {
+  return status.code() == StatusCode::kUnauthenticated;
+}
+bool IsUnavailable(const Status& status) {
+  return status.code() == StatusCode::kUnavailable;
+}
+bool IsUnimplemented(const Status& status) {
+  return status.code() == StatusCode::kUnimplemented;
+}
+bool IsUnknown(const Status& status) {
+  return status.code() == StatusCode::kUnknown;
+}
+
+}  // namespace sapi
diff --git a/sandboxed_api/util/canonical_errors.h b/sandboxed_api/util/canonical_errors.h
new file mode 100644
index 0000000..b86afa2
--- /dev/null
+++ b/sandboxed_api/util/canonical_errors.h
@@ -0,0 +1,67 @@
+// Copyright 2019 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef SANDBOXED_API_UTIL_CANONICAL_ERRORS_H_
+#define SANDBOXED_API_UTIL_CANONICAL_ERRORS_H_
+
+#include "absl/base/attributes.h"
+#include "absl/strings/string_view.h"
+#include "sandboxed_api/util/status.h"
+
+namespace sapi {
+
+// Each of the functions below creates a canonical error with the given
+// message. The error code of the returned status object matches the name of
+// the function.
+Status AbortedError(absl::string_view message);
+Status AlreadyExistsError(absl::string_view message);
+Status CancelledError(absl::string_view message);
+Status DataLossError(absl::string_view message);
+Status DeadlineExceededError(absl::string_view message);
+Status FailedPreconditionError(absl::string_view message);
+Status InternalError(absl::string_view message);
+Status InvalidArgumentError(absl::string_view message);
+Status NotFoundError(absl::string_view message);
+Status OutOfRangeError(absl::string_view message);
+Status PermissionDeniedError(absl::string_view message);
+Status ResourceExhaustedError(absl::string_view message);
+Status UnauthenticatedError(absl::string_view message);
+Status UnavailableError(absl::string_view message);
+Status UnimplementedError(absl::string_view message);
+Status UnknownError(absl::string_view message);
+
+// Each of the functions below returns true if the given status matches the
+// canonical error code implied by the function's name. If necessary, the
+// status will be converted to the canonical error space to perform the
+// comparison.
+ABSL_MUST_USE_RESULT bool IsAborted(const Status& status);
+ABSL_MUST_USE_RESULT bool IsAlreadyExists(const Status& status);
+ABSL_MUST_USE_RESULT bool IsCancelled(const Status& status);
+ABSL_MUST_USE_RESULT bool IsDataLoss(const Status& status);
+ABSL_MUST_USE_RESULT bool IsDeadlineExceeded(const Status& status);
+ABSL_MUST_USE_RESULT bool IsFailedPrecondition(const Status& status);
+ABSL_MUST_USE_RESULT bool IsInternal(const Status& status);
+ABSL_MUST_USE_RESULT bool IsInvalidArgument(const Status& status);
+ABSL_MUST_USE_RESULT bool IsNotFound(const Status& status);
+ABSL_MUST_USE_RESULT bool IsOutOfRange(const Status& status);
+ABSL_MUST_USE_RESULT bool IsPermissionDenied(const Status& status);
+ABSL_MUST_USE_RESULT bool IsResourceExhausted(const Status& status);
+ABSL_MUST_USE_RESULT bool IsUnauthenticated(const Status& status);
+ABSL_MUST_USE_RESULT bool IsUnavailable(const Status& status);
+ABSL_MUST_USE_RESULT bool IsUnimplemented(const Status& status);
+ABSL_MUST_USE_RESULT bool IsUnknown(const Status& status);
+
+}  // namespace sapi
+
+#endif  // SANDBOXED_API_UTIL_CANONICAL_ERRORS_H_
diff --git a/sandboxed_api/util/status.cc b/sandboxed_api/util/status.cc
index f8ccf85..3a1dd56 100644
--- a/sandboxed_api/util/status.cc
+++ b/sandboxed_api/util/status.cc
@@ -89,102 +89,4 @@ std::ostream& operator<<(std::ostream& os, const Status& status) {
   return os << status.ToString();
 }
 
-Status AbortedError(absl::string_view message) {
-  return Status{StatusCode::kAborted, message};
-}
-Status AlreadyExistsError(absl::string_view message) {
-  return Status{StatusCode::kAlreadyExists, message};
-}
-Status CancelledError(absl::string_view message) {
-  return Status{StatusCode::kCancelled, message};
-}
-Status DataLossError(absl::string_view message) {
-  return Status{StatusCode::kDataLoss, message};
-}
-Status DeadlineExceededError(absl::string_view message) {
-  return Status{StatusCode::kDeadlineExceeded, message};
-}
-Status FailedPreconditionError(absl::string_view message) {
-  return Status{StatusCode::kFailedPrecondition, message};
-}
-Status InternalError(absl::string_view message) {
-  return Status{StatusCode::kInternal, message};
-}
-Status InvalidArgumentError(absl::string_view message) {
-  return Status{StatusCode::kInvalidArgument, message};
-}
-Status NotFoundError(absl::string_view message) {
-  return Status{StatusCode::kNotFound, message};
-}
-Status OutOfRangeError(absl::string_view message) {
-  return Status{StatusCode::kOutOfRange, message};
-}
-Status PermissionDeniedError(absl::string_view message) {
-  return Status{StatusCode::kPermissionDenied, message};
-}
-Status ResourceExhaustedError(absl::string_view message) {
-  return Status{StatusCode::kResourceExhausted, message};
-}
-Status UnauthenticatedError(absl::string_view message) {
-  return Status{StatusCode::kUnauthenticated, message};
-}
-Status UnavailableError(absl::string_view message) {
-  return Status{StatusCode::kUnavailable, message};
-}
-Status UnimplementedError(absl::string_view message) {
-  return Status{StatusCode::kUnimplemented, message};
-}
-Status UnknownError(absl::string_view message) {
-  return Status{StatusCode::kUnknown, message};
-}
-
-bool IsAborted(const Status& status) {
-  return status.code() == StatusCode::kAborted;
-}
-bool IsAlreadyExists(const Status& status) {
-  return status.code() == StatusCode::kAlreadyExists;
-}
-bool IsCancelled(const Status& status) {
-  return status.code() == StatusCode::kCancelled;
-}
-bool IsDataLoss(const Status& status) {
-  return status.code() == StatusCode::kDataLoss;
-}
-bool IsDeadlineExceeded(const Status& status) {
-  return status.code() == StatusCode::kDeadlineExceeded;
-}
-bool IsFailedPrecondition(const Status& status) {
-  return status.code() == StatusCode::kFailedPrecondition;
-}
-bool IsInternal(const Status& status) {
-  return status.code() == StatusCode::kInternal;
-}
-bool IsInvalidArgument(const Status& status) {
-  return status.code() == StatusCode::kInvalidArgument;
-}
-bool IsNotFound(const Status& status) {
-  return status.code() == StatusCode::kNotFound;
-}
-bool IsOutOfRange(const Status& status) {
-  return status.code() == StatusCode::kOutOfRange;
-}
-bool IsPermissionDenied(const Status& status) {
-  return status.code() == StatusCode::kPermissionDenied;
-}
-bool IsResourceExhausted(const Status& status) {
-  return status.code() == StatusCode::kResourceExhausted;
-}
-bool IsUnauthenticated(const Status& status) {
-  return status.code() == StatusCode::kUnauthenticated;
-}
-bool IsUnavailable(const Status& status) {
-  return status.code() == StatusCode::kUnavailable;
-}
-bool IsUnimplemented(const Status& status) {
-  return status.code() == StatusCode::kUnimplemented;
-}
-bool IsUnknown(const Status& status) {
-  return status.code() == StatusCode::kUnknown;
-}
-
 }  // namespace sapi
diff --git a/sandboxed_api/util/status.h b/sandboxed_api/util/status.h
index 983f5c6..c5a2dcd 100644
--- a/sandboxed_api/util/status.h
+++ b/sandboxed_api/util/status.h
@@ -123,47 +123,6 @@ inline bool operator!=(const Status& lhs, const Status& rhs) {
   return !(lhs == rhs);
 }
 
-// Each of the functions below creates a canonical error with the given
-// message. The error code of the returned status object matches the name of
-// the function.
-Status AbortedError(absl::string_view message);
-Status AlreadyExistsError(absl::string_view message);
-Status CancelledError(absl::string_view message);
-Status DataLossError(absl::string_view message);
-Status DeadlineExceededError(absl::string_view message);
-Status FailedPreconditionError(absl::string_view message);
-Status InternalError(absl::string_view message);
-Status InvalidArgumentError(absl::string_view message);
-Status NotFoundError(absl::string_view message);
-Status OutOfRangeError(absl::string_view message);
-Status PermissionDeniedError(absl::string_view message);
-Status ResourceExhaustedError(absl::string_view message);
-Status UnauthenticatedError(absl::string_view message);
-Status UnavailableError(absl::string_view message);
-Status UnimplementedError(absl::string_view message);
-Status UnknownError(absl::string_view message);
-
-// Each of the functions below returns true if the given status matches the
-// canonical error code implied by the function's name. If necessary, the
-// status will be converted to the canonical error space to perform the
-// comparison.
-ABSL_MUST_USE_RESULT bool IsAborted(const Status& status);
-ABSL_MUST_USE_RESULT bool IsAlreadyExists(const Status& status);
-ABSL_MUST_USE_RESULT bool IsCancelled(const Status& status);
-ABSL_MUST_USE_RESULT bool IsDataLoss(const Status& status);
-ABSL_MUST_USE_RESULT bool IsDeadlineExceeded(const Status& status);
-ABSL_MUST_USE_RESULT bool IsFailedPrecondition(const Status& status);
-ABSL_MUST_USE_RESULT bool IsInternal(const Status& status);
-ABSL_MUST_USE_RESULT bool IsInvalidArgument(const Status& status);
-ABSL_MUST_USE_RESULT bool IsNotFound(const Status& status);
-ABSL_MUST_USE_RESULT bool IsOutOfRange(const Status& status);
-ABSL_MUST_USE_RESULT bool IsPermissionDenied(const Status& status);
-ABSL_MUST_USE_RESULT bool IsResourceExhausted(const Status& status);
-ABSL_MUST_USE_RESULT bool IsUnauthenticated(const Status& status);
-ABSL_MUST_USE_RESULT bool IsUnavailable(const Status& status);
-ABSL_MUST_USE_RESULT bool IsUnimplemented(const Status& status);
-ABSL_MUST_USE_RESULT bool IsUnknown(const Status& status);
-
 std::ostream& operator<<(std::ostream& os, const Status& status);
 
 inline void SaveStatusToProto(const Status& status, StatusProto* out) {
diff --git a/sandboxed_api/var_abstract.cc b/sandboxed_api/var_abstract.cc
index 17310b9..ae17b29 100644
--- a/sandboxed_api/var_abstract.cc
+++ b/sandboxed_api/var_abstract.cc
@@ -22,6 +22,7 @@
 #include "sandboxed_api/sandbox2/comms.h"
 #include "absl/strings/str_cat.h"
 #include "sandboxed_api/rpcchannel.h"
+#include "sandboxed_api/util/canonical_errors.h"
 #include "sandboxed_api/util/status_macros.h"
 
 namespace sapi::v {
diff --git a/sandboxed_api/var_array.h b/sandboxed_api/var_array.h
index 4717eba..ab620a1 100644
--- a/sandboxed_api/var_array.h
+++ b/sandboxed_api/var_array.h
@@ -24,6 +24,7 @@
 #include "sandboxed_api/var_abstract.h"
 #include "sandboxed_api/var_pointable.h"
 #include "sandboxed_api/var_ptr.h"
+#include "sandboxed_api/util/canonical_errors.h"
 #include "sandboxed_api/util/status_macros.h"
 
 namespace sapi::v {
diff --git a/sandboxed_api/var_int.cc b/sandboxed_api/var_int.cc
index 4da621e..c0a9c96 100644
--- a/sandboxed_api/var_int.cc
+++ b/sandboxed_api/var_int.cc
@@ -14,6 +14,7 @@
 
 #include "sandboxed_api/var_int.h"
 #include "sandboxed_api/rpcchannel.h"
+#include "sandboxed_api/util/canonical_errors.h"
 #include "sandboxed_api/util/status_macros.h"
 
 namespace sapi::v {