Add GYP flag to optionally enable the Hangout Services extension in

build/common.gypi

 # 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.
 
 # 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 491 matching lines @@
       'native_memory_pressure_signals%': 0,
 
       'data_reduction_fallback_host%' : '',
       'data_reduction_dev_host%' : '',
       'spdy_proxy_auth_origin%' : '',
       'spdy_proxy_auth_property%' : '',
       'spdy_proxy_auth_value%' : '',
       'data_reduction_proxy_probe_url%' : '',
       'enable_mdns%' : 0,
       'enable_enhanced_bookmarks%': 0,
+      'enable_hangout_services_extension%': 0,
 
       'conditions': [
         # A flag for POSIX platforms
         ['OS=="win"', {
           'os_posix%': 0,
         }, {
           'os_posix%': 1,
         }],
 
         # A flag for BSD platforms
@@ skipping 447 matching lines @@
     'native_discardable_memory%': '<(native_discardable_memory)',
     'native_memory_pressure_signals%': '<(native_memory_pressure_signals)',
     'data_reduction_fallback_host%': '<(data_reduction_fallback_host)',
     'data_reduction_dev_host%': '<(data_reduction_dev_host)',
     'spdy_proxy_auth_origin%': '<(spdy_proxy_auth_origin)',
     'spdy_proxy_auth_property%': '<(spdy_proxy_auth_property)',
     'spdy_proxy_auth_value%': '<(spdy_proxy_auth_value)',
     'data_reduction_proxy_probe_url%': '<(data_reduction_proxy_probe_url)',
     'enable_mdns%' : '<(enable_mdns)',
     'enable_enhanced_bookmarks%' : '<(enable_enhanced_bookmarks)',
+    'enable_hangout_services_extension%' : '<(enable_hangout_services_extension)',
     'v8_optimized_debug%': '<(v8_optimized_debug)',
     'proprietary_codecs%': '<(proprietary_codecs)',
     'use_goma%': '<(use_goma)',
     'gomadir%': '<(gomadir)',
 
     # Use system nspr instead of the bundled one.
     'use_system_nspr%': 0,
 
     # Use system protobuf instead of bundled one.
     'use_system_protobuf%': 0,
@@ skipping 772 matching lines @@
       }],
       ['enable_webrtc==1', {
         'grit_defines': ['-D', 'enable_webrtc'],
       }],
       ['enable_mdns==1', {
         'grit_defines': ['-D', 'enable_mdns'],
       }],
       ['enable_enhanced_bookmarks==1', {
         'grit_defines': ['-D', 'enable_enhanced_bookmarks'],
       }],
+      ['enable_hangout_services_extension==1', {
+        'grit_defines': ['-D', 'enable_hangout_services_extension'],
+      }],
       ['enable_task_manager==1', {
         'grit_defines': ['-D', 'enable_task_manager'],
       }],
       ['clang_use_chrome_plugins==1 and OS!="win"', {
         'clang_chrome_plugins_flags': [
           '<!@(<(DEPTH)/tools/clang/scripts/plugin_flags.sh)'
         ],
       }],
 
       ['asan==1 and OS!="win"', {
@@ skipping 669 matching lines @@
       ['data_reduction_proxy_probe_url != ""', {
         'defines': [
           'DATA_REDUCTION_PROXY_PROBE_URL="<(data_reduction_proxy_probe_url)"'],
       }],
       ['enable_mdns==1', {
         'defines': ['ENABLE_MDNS=1'],
       }],
       ['enable_enhanced_bookmarks==1', {
         'defines': ['ENABLE_ENHANCED_BOOKMARKS=1'],
       }],
+      ['enable_hangout_services_extension==1', {
+        'defines': ['ENABLE_HANGOUT_SERVICES_EXTENSION=1'],
+      }],
       ['enable_ipc_fuzzer==1', {
         'defines': ['ENABLE_IPC_FUZZER=1'],
       }],
     ],  # conditions for 'target_defaults'
     'target_conditions': [
       ['enable_wexit_time_destructors==1', {
         'conditions': [
           [ 'clang==1', {
             'cflags': [
               '-Wexit-time-destructors',
@@ skipping 2441 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',
   },
 }