Chrome on Android : Begin removing references to themes.

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 224 matching lines @@
       'enable_web_intents_tag%': 0,
 
       # Webrtc compilation is enabled by default. Set to 0 to disable.
       'enable_webrtc%': 1,
 
       # PPAPI by default does not support plugins making calls off the main
       # thread. Set to 1 to turn on experimental support for out-of-process
       # plugins to make call of the main thread.
       'enable_pepper_threading%': 0,
 
+      # Enables theme support, which is enabled by default.  Support for
+      # disabling depends on the platform.
+      'enable_themes%': 1,
+
       # XInput2 multitouch support is disabled by default (use_xi2_mt=0).
       # Setting to non-zero value enables XI2 MT. When XI2 MT is enabled,
       # the input value also defines the required XI2 minor minimum version.
       # For example, use_xi2_mt=2 means XI2.2 or above version is required.
       'use_xi2_mt%': 0,
 
       # Use of precompiled headers on Windows.
       #
       # This is on by default in VS 2010, but off by default for VS
       # 2008 because of complications that it can cause with our
@@ skipping 224 matching lines @@
     'input_speech%': '<(input_speech)',
     'notifications%': '<(notifications)',
     'clang_use_chrome_plugins%': '<(clang_use_chrome_plugins)',
     'asan%': '<(asan)',
     'asan_blacklist%': '<(asan_blacklist)',
     'order_text_section%': '<(order_text_section)',
     'enable_register_protocol_handler%': '<(enable_register_protocol_handler)',
     'enable_web_intents%': '<(enable_web_intents)',
     'enable_web_intents_tag%': '<(enable_web_intents_tag)',
     'enable_plugin_installation%': '<(enable_plugin_installation)',
+    'enable_themes%': '<(enable_themes)',
     'linux_use_gold_binary%': '<(linux_use_gold_binary)',
     'linux_use_gold_flags%': '<(linux_use_gold_flags)',
     'use_canvas_skia_skia%': '<(use_canvas_skia_skia)',
     'tests_run%': '<(tests_run)',
 
     # Whether to build for Wayland display server
     'use_wayland%': 0,
 
     # Use system yasm instead of bundled one.
     'use_system_yasm%': 0,
@@ skipping 265 matching lines @@
 
         # Always uses openssl.
         'use_openssl%': 1,
 
         'proprietary_codecs%': '<(proprietary_codecs)',
         'safe_browsing%': 0,
         'configuration_policy%': 0,
         'input_speech%': 0,
         'enable_web_intents%': 0,
         'java_bridge%': 1,
+        # Android does not support themes.
+        'enable_themes%': 0,
 
         # Set to 1 once we have a notification system for Android.
         # http://crbug.com/115320
         '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)',
 
@@ skipping 558 matching lines @@
       }],
       ['OS=="win" and branding=="Chrome"', {
         'defines': ['ENABLE_SWIFTSHADER'],
       }],
       ['enable_dart==1', {
         'defines': ['WEBKIT_USING_DART=1'],
       }],
       ['enable_plugin_installation==1', {
         'defines': ['ENABLE_PLUGIN_INSTALLATION=1'],
       }],
+      ['enable_themes==1', {
+        'defines': ['ENABLE_THEMES=1'],
+      }],
     ],  # conditions for 'target_defaults'
     'target_conditions': [
       ['enable_wexit_time_destructors==1', {
         'conditions': [
           [ 'clang==1', {
             'cflags': [
               '-Wexit-time-destructors',
             ],
             'xcode_settings': {
               'WARNING_CFLAGS': [
@@ skipping 1532 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',
   },
 }