adds WARP support to Chromium, for Metro mode only, on Windows 8

chrome/chrome_browser.gypi

 # Copyright 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': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 455 matching lines @@
       'browser/google/google_update_win.cc',
       'browser/google/google_update_win.h',
       'browser/google/google_url_tracker_factory.cc',
       'browser/google/google_url_tracker_factory.h',
       'browser/google/google_url_tracker_navigation_helper_impl.cc',
       'browser/google/google_url_tracker_navigation_helper_impl.h',
       'browser/google/google_brand.cc',
       'browser/google/google_brand.h',
       'browser/google/google_brand_chromeos.cc',
       'browser/google/google_brand_chromeos.h',
-      'browser/gpu/gl_string_manager.cc',
-      'browser/gpu/gl_string_manager.h',
       'browser/gpu/gpu_feature_checker.cc',
       'browser/gpu/gpu_feature_checker.h',
+      'browser/gpu/gpu_pref_manager.cc',
+      'browser/gpu/gpu_pref_manager.h',
       'browser/gpu/gpu_mode_manager.cc',
       'browser/gpu/gpu_mode_manager.h',
       'browser/gpu/three_d_api_observer.cc',
       'browser/gpu/three_d_api_observer.h',
       'browser/history/android/android_cache_database.cc',
       'browser/history/android/android_cache_database.h',
       'browser/history/android/android_history_provider_service.cc',
       'browser/history/android/android_history_provider_service.h',
       'browser/history/android/android_history_types.cc',
       'browser/history/android/android_history_types.h',
@@ skipping 3090 matching lines @@
           'variables': {
             'proto_in_dir': 'browser/sync_file_system/drive_backend',
             'proto_out_dir': 'chrome/browser/sync_file_system/drive_backend',
           },
           'includes': [ '../build/protoc.gypi' ]
         },
       ],
     },],
   ],
 }