Remove no longer needed friend declaration

Drive-by dependencies cleanup

PiperOrigin-RevId: 518551045
Change-Id: I132dfc42945f500e8efec58a4d58d3bee4d1f191

sandboxed_api/sandbox2/BUILD.bazel

@@ -682,10 +682,7 @@ cc_library(
         "//sandboxed_api/util:file_base",
         "//sandboxed_api/util:fileops",
         "//sandboxed_api/util:raw_logging",
-        "//sandboxed_api/util:strerror",
-        "@com_google_absl//absl/base:core_headers",
         "@com_google_absl//absl/strings",
-        "@com_google_absl//absl/strings:str_format",
     ],
 )
 

sandboxed_api/sandbox2/CMakeLists.txt

@@ -615,19 +615,14 @@ add_library(sandbox2_namespace ${SAPI_LIB_TYPE}
   namespace.h
 )
 add_library(sandbox2::namespace ALIAS sandbox2_namespace)
-target_link_libraries(sandbox2_namespace PRIVATE
-  absl::core_headers
-  absl::str_format
-  absl::strings
-  protobuf::libprotobuf
+target_link_libraries(sandbox2_namespace
+  PRIVATE absl::strings
           sapi::file_base
           sapi::fileops
-  sandbox2::mounts
-  sandbox2::mount_tree_proto
-  sapi::strerror
-  sandbox2::violation_proto
           sapi::base
           sapi::raw_logging
+  PUBLIC sandbox2::violation_proto
+         sandbox2::mounts
 )
 
 # sandboxed_api/sandbox2:forkingclient

sandboxed_api/sandbox2/namespace.cc

@@ -33,12 +33,9 @@
 #include <utility>
 
 #include "absl/strings/str_cat.h"
-#include "absl/strings/str_format.h"
-#include "absl/strings/string_view.h"
 #include "sandboxed_api/util/fileops.h"
 #include "sandboxed_api/util/path.h"
 #include "sandboxed_api/util/raw_logging.h"
-#include "sandboxed_api/util/strerror.h"
 
 namespace sandbox2 {
 

sandboxed_api/sandbox2/namespace.h

@@ -21,10 +21,8 @@
 #include <sys/types.h>
 
 #include <cstdint>
-#include <memory>
 #include <string>
 
-#include "absl/base/macros.h"
 #include "sandboxed_api/sandbox2/mounts.h"
 #include "sandboxed_api/sandbox2/violation.pb.h"
 
@@ -61,8 +59,6 @@ class Namespace final {
   bool allow_mount_propagation() const { return allow_mount_propagation_; }
 
  private:
-  friend class StackTracePeer;
-
   int32_t clone_flags_;
   Mounts mounts_;
   std::string hostname_;