Fix shutdown race in IPCSyncChannelTest and get rid of "suppressions"/annotations.

ipc/ipc.gyp

 # Copyright (c) 2012 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'includes': [
     'ipc.gypi',
   ],
   'targets': [
     {
       'target_name': 'ipc',
       'type': '<(component)',
       'variables': {
         'ipc_target': 1,
       },
       'dependencies': [
         '../base/base.gyp:base',
+        # TODO(vtl): Needed for base/lazy_instance.h, which is suspect.
         '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
       ],
       # TODO(gregoryd): direct_dependent_settings should be shared with the
       # 64-bit target, but it doesn't work due to a bug in gyp
       'direct_dependent_settings': {
         'include_dirs': [
           '..',
         ],
       },
     },
     {
       'target_name': 'ipc_tests',
       'type': '<(gtest_target_type)',
       'dependencies': [
         'ipc',
         'test_support_ipc',
         '../base/base.gyp:base',
         '../base/base.gyp:base_i18n',
         '../base/base.gyp:test_support_base',
-        '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
         '../testing/gtest.gyp:gtest',
       ],
       'include_dirs': [
         '..'
       ],
       'sources': [
         'file_descriptor_set_posix_unittest.cc',
         'ipc_channel_posix_unittest.cc',
         'ipc_fuzzing_tests.cc',
         'ipc_message_unittest.cc',
@@ skipping 48 matching lines @@
     ['OS=="win"', {
       'targets': [
         {
           'target_name': 'ipc_win64',
           'type': '<(component)',
           'variables': {
             'ipc_target': 1,
           },
           'dependencies': [
             '../base/base.gyp:base_nacl_win64',
+            # TODO(vtl): Needed for base/lazy_instance.h, which is suspect.
             '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations_win64',
           ],
           # TODO(gregoryd): direct_dependent_settings should be shared with the
           # 32-bit target, but it doesn't work due to a bug in gyp
           'direct_dependent_settings': {
             'include_dirs': [
               '..',
             ],
           },
           'configurations': {
@@ skipping 17 matching lines @@
           ],
           'variables': {
             'test_suite_name': 'ipc_tests',
             'input_shlib_path': '<(SHARED_LIB_DIR)/<(SHARED_LIB_PREFIX)ipc_tests<(SHARED_LIB_SUFFIX)',
           },
           'includes': [ '../build/apk_test.gypi' ],
         }],
     }],
   ],
 }