Unify var tracking between webkit and the proxy.

ppapi/ppapi_shared.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.
 
 {
   'targets': [
     {
       'target_name': 'ppapi_shared',
       'type': 'static_library',
       'dependencies': [
@@ skipping 20 matching lines @@
         'shared_impl/char_set_impl.cc',
         'shared_impl/char_set_impl.h',
         'shared_impl/crypto_impl.cc',
         'shared_impl/crypto_impl.h',
         'shared_impl/font_impl.cc',
         'shared_impl/font_impl.h',
         'shared_impl/function_group_base.cc',
         'shared_impl/function_group_base.h',
         'shared_impl/graphics_3d_impl.cc',
         'shared_impl/graphics_3d_impl.h',
+        'shared_impl/id_assignment.cc',
+        'shared_impl/id_assignment.h',
         'shared_impl/image_data_impl.cc',
         'shared_impl/image_data_impl.h',
         'shared_impl/input_event_impl.cc',
         'shared_impl/input_event_impl.h',
         'shared_impl/instance_impl.cc',
         'shared_impl/instance_impl.h',
         'shared_impl/opengles2_impl.cc',
         'shared_impl/opengles2_impl.h',
         'shared_impl/ppapi_preferences.cc',
         'shared_impl/ppapi_preferences.h',
         'shared_impl/ppp_instance_combined.cc',
         'shared_impl/ppp_instance_combined.h',
         'shared_impl/resource_object_base.cc',
         'shared_impl/resource_object_base.h',
         'shared_impl/time_conversion.cc',
         'shared_impl/time_conversion.h',
         'shared_impl/tracker_base.cc',
         'shared_impl/tracker_base.h',
         'shared_impl/url_util_impl.cc',
         'shared_impl/url_util_impl.h',
         'shared_impl/var.cc',
         'shared_impl/var.h',
+        'shared_impl/var_tracker.cc',
+        'shared_impl/var_tracker.h',
         'shared_impl/video_decoder_impl.cc',
         'shared_impl/video_decoder_impl.h',
         'shared_impl/webkit_forwarding.cc',
         'shared_impl/webkit_forwarding.h',
 
         'thunk/common.h',
         'thunk/common.cc',
         'thunk/enter.h',
         'thunk/ppb_audio_api.h',
         'thunk/ppb_audio_config_api.h',
@@ skipping 72 matching lines @@
         'thunk/ppb_video_layer_api.h',
         'thunk/ppb_video_layer_thunk.cc',
         'thunk/ppb_widget_api.h',
         'thunk/ppb_widget_thunk.cc',
         'thunk/ppb_zoom_thunk.cc',
         'thunk/thunk.h',
       ],
     },
   ],
 }