Replace the gc extension in content shell with a gin::Wrappable class

content/content_shell.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.
 
 {
   'variables': {
     'content_shell_product_name': 'Content Shell',
     # The "19" is so that sites that sniff for version think that this is
     # something reasonably current; the "77.34.5" is a hint that this isn't a
     # standard Chrome.
@@ skipping 23 matching lines @@
         'content.gyp:content_ppapi_plugin',
         'content.gyp:content_renderer',
         'content.gyp:content_utility',
         'content.gyp:content_worker',
         'content_shell_resources',
         'test_support_content',
         'content_resources.gyp:content_resources',
         '../base/base.gyp:base',
         '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
         '../components/components.gyp:breakpad_component',
+        '../gin/gin.gyp:gin',
         '../ipc/ipc.gyp:ipc',
         '../media/media.gyp:media',
         '../net/net.gyp:net',
         '../net/net.gyp:net_resources',
         '../skia/skia.gyp:skia',
         '../third_party/WebKit/public/blink.gyp:blink',
         '../third_party/WebKit/public/blink_test_plugin.gyp:blink_test_plugin',
         '../third_party/WebKit/public/blink_test_runner.gyp:blink_test_support',
         '../ui/events/events.gyp:events_base',
         '../ui/gfx/gfx.gyp:gfx',
@@ skipping 98 matching lines @@
         'shell/common/shell_switches.cc',
         'shell/common/shell_switches.h',
         'shell/common/shell_test_configuration.cc',
         'shell/common/shell_test_configuration.h',
         'shell/common/test_runner/WebPreferences.cpp',
         'shell/common/test_runner/WebPreferences.h',
         'shell/common/webkit_test_helpers.cc',
         'shell/common/webkit_test_helpers.h',
         'shell/geolocation/shell_access_token_store.cc',
         'shell/geolocation/shell_access_token_store.h',
-        'shell/renderer/gc_extension.cc',
-        'shell/renderer/gc_extension.h',
+        'shell/renderer/gc_controller.cc',
+        'shell/renderer/gc_controller.h',
         'shell/renderer/shell_content_renderer_client.cc',
         'shell/renderer/shell_content_renderer_client.h',
         'shell/renderer/shell_render_frame_observer.cc',
         'shell/renderer/shell_render_frame_observer.h',
         'shell/renderer/shell_render_process_observer.cc',
         'shell/renderer/shell_render_process_observer.h',
         'shell/renderer/shell_render_view_observer.cc',
         'shell/renderer/shell_render_view_observer.h',
         'shell/renderer/test_runner/AccessibilityController.cpp',
         'shell/renderer/test_runner/AccessibilityController.h',
@@ skipping 836 matching lines @@
                 '--input_symbol', '<(PRODUCT_DIR)/content_shell.exe.pdb',
                 '--destination_dir', '<(dest_dir)',
               ],
             },
           ],
         },
       ],
     }],  # OS=="win" and fastbuild==0 and target_arch=="ia32"
   ]
 }