[iOS] Do not use breakpad GTMLogger.m implementation.

breakpad/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/symlink.gni")
 import("//testing/test.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
@@ skipping 789 matching lines @@
       "src/client/mac/handler/minidump_generator.h",
       "src/client/mac/handler/protected_memory_allocator.cc",
       "src/client/mac/handler/protected_memory_allocator.h",
       "src/client/mac/sender/uploader.h",
       "src/client/mac/sender/uploader.mm",
       "src/client/minidump_file_writer-inl.h",
       "src/client/minidump_file_writer.cc",
       "src/client/minidump_file_writer.h",
       "src/common/convert_UTF.c",
       "src/common/convert_UTF.h",
-      "src/common/mac/GTMLogger.h",
-      "src/common/mac/GTMLogger.m",
       "src/common/mac/HTTPMultipartUpload.m",
       "src/common/mac/file_id.cc",
       "src/common/mac/file_id.h",
       "src/common/mac/macho_id.cc",
       "src/common/mac/macho_id.h",
       "src/common/mac/macho_utilities.cc",
       "src/common/mac/macho_utilities.h",
       "src/common/mac/macho_walker.cc",
       "src/common/mac/macho_walker.h",
       "src/common/mac/string_utilities.cc",
@@ skipping 77 matching lines @@
 
 if (is_android) {
   # TODO(GYP_GONE) Delete this after we've converted everything to GN.
   group("breakpad_unittests_deps") {
     testonly = true
     deps = [
       ":breakpad_unittests",
     ]
   }
 }