Allow building without notification support.

build/common.gypi

 # Copyright (c) 2011 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.
 
 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_chromium,
 # since gyp_chromium is automatically forcing its inclusion.
 {
   # Variables expected to be overriden on the GYP command line (-D) or by
   # ~/.gyp/include.gypi.
@@ skipping 186 matching lines @@
 
       # Configuration policy is enabled by default. Set to 0 to disable.
       'configuration_policy%': 1,
 
       # Safe browsing is compiled in by default. Set to 0 to disable.
       'safe_browsing%': 1,
 
       # Speech input is compiled in by default. Set to 0 to disable.
       'input_speech%': 1,
 
+      # Notifications are compiled in by default. Set to 0 to disable.
+      'notifications%' : 1,
+
       # If this is set, the clang plugins used on the buildbot will be used.
       # Run tools/clang/scripts/update.sh to make sure they are compiled.
       # This causes 'clang_chrome_plugins_flags' to be set.
       # Has no effect if 'clang' is not set as well.
       'clang_use_chrome_plugins%': 0,
 
       # Enable building with ASAN (Clang's -fasan option).
       # -fasan only works with clang, but asan=1 implies clang=1
       # See https://sites.google.com/a/chromium.org/dev/developers/testing/addresssanitizer
       'asan%': 0,
@@ skipping 168 matching lines @@
     'use_titlecase_in_grd_files%': '<(use_titlecase_in_grd_files)',
     'use_third_party_translations%': '<(use_third_party_translations)',
     'remoting%': '<(remoting)',
     'use_threaded_compositing%': '<(use_threaded_compositing)',
     'enable_webrtc%': '<(enable_webrtc)',
     'chromium_win_pch%': '<(chromium_win_pch)',
     'p2p_apis%': '<(p2p_apis)',
     'configuration_policy%': '<(configuration_policy)',
     'safe_browsing%': '<(safe_browsing)',
     'input_speech%': '<(input_speech)',
+    'notifications%': '<(notifications)',
     'clang_use_chrome_plugins%': '<(clang_use_chrome_plugins)',
     'asan%': '<(asan)',
     'enable_register_protocol_handler%': '<(enable_register_protocol_handler)',
     'enable_web_intents%': '<(enable_web_intents)',
     # Whether to build for Wayland display server
     'use_wayland%': 0,
 
     # Use system yasm instead of bundled one.
     'use_system_yasm%': 0,
 
@@ skipping 254 matching lines @@
         'linux_breakpad%': 0,
 
         # Always uses openssl.
         'use_openssl%': 1,
 
         'proprietary_codecs%': '<(proprietary_codecs)',
         'safe_browsing%': 0,
         'configuration_policy%': 0,
         'input_speech%': 0,
         'java_bridge%': 1,
+        'notifications%': 0,
 
         # Builds the gtest targets as a shared_library.
         # TODO(michaelbai): Use the fixed value 'shared_library' once it
         # is fully supported.
         'gtest_target_type%': '<(gtest_target_type)',
 
         # Uses system APIs for decoding audio and video.
         'use_libffmpeg%': '0',
 
         # Always use the chromium skia. The use_system_harfbuzz needs to
@@ skipping 343 matching lines @@
       }],
       ['enable_pepper_threading==1', {
         'defines': ['ENABLE_PEPPER_THREADING'],
       }],
       ['configuration_policy==1', {
         'defines': ['ENABLE_CONFIGURATION_POLICY'],
       }],
       ['input_speech==1', {
         'defines': ['ENABLE_INPUT_SPEECH'],
       }],
+      ['notifications==1', {
+        'defines': ['ENABLE_NOTIFICATIONS'],
+      }],
       ['fastbuild!=0', {
 
         'conditions': [
           # For Windows and Mac, we don't genererate debug information.
           ['OS=="win" or OS=="mac"', {
             'msvs_settings': {
               'VCLinkerTool': {
                 'GenerateDebugInformation': 'false',
               },
               'VCCLCompilerTool': {
@@ skipping 1546 matching lines @@
     # settings in target dicts.  SYMROOT is a special case, because many other
     # Xcode variables depend on it, including variables such as
     # PROJECT_DERIVED_FILE_DIR.  When a source group corresponding to something
     # like PROJECT_DERIVED_FILE_DIR is added to a project, in order for the
     # files to appear (when present) in the UI as actual files and not red
     # red "missing file" proxies, the correct path to PROJECT_DERIVED_FILE_DIR,
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }