gpu: reference target surfaces through a globally unique surface id.

content/content_browser.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.
 
 {
   'dependencies': [
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../net/net.gyp:http_server',
     '../net/net.gyp:net',
@@ skipping 286 matching lines @@
     'browser/gpu/gpu_blacklist.h',
     'browser/gpu/gpu_data_manager.cc',
     'browser/gpu/gpu_data_manager.h',
     'browser/gpu/gpu_performance_stats.cc',
     'browser/gpu/gpu_performance_stats.h',
     'browser/gpu/gpu_performance_stats_win.cc',
     'browser/gpu/gpu_process_host.cc',
     'browser/gpu/gpu_process_host.h',
     'browser/gpu/gpu_process_host_ui_shim.cc',
     'browser/gpu/gpu_process_host_ui_shim.h',
+    'browser/gpu/gpu_surface_tracker.cc',
+    'browser/gpu/gpu_surface_tracker.h',
     'browser/host_zoom_map.cc',
     'browser/host_zoom_map.h',
     'browser/in_process_webkit/browser_webkitplatformsupport_impl.cc',
     'browser/in_process_webkit/browser_webkitplatformsupport_impl.h',
     'browser/in_process_webkit/dom_storage_area.cc',
     'browser/in_process_webkit/dom_storage_area.h',
     'browser/in_process_webkit/dom_storage_context.cc',
     'browser/in_process_webkit/dom_storage_context.h',
     'browser/in_process_webkit/dom_storage_message_filter.cc',
     'browser/in_process_webkit/dom_storage_message_filter.h',
@@ skipping 509 matching lines @@
         'ENABLE_JAVA_BRIDGE',
       ],
     }, {
       'sources/': [
         ['exclude', '^browser/renderer_host/java/'],
       ],
     }],
   ],
 }