Add shared bitmap managers for browser and renderer processes.

content/content_child.gypi

 # Copyright 2013 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',
     '../components/tracing.gyp:tracing',
     '../skia/skia.gyp:skia',
     '../ui/gfx/gfx.gyp:gfx',
@@ skipping 23 matching lines @@
     'child/browser_font_resource_trusted.cc',
     'child/browser_font_resource_trusted.h',
     'child/child_histogram_message_filter.cc',
     'child/child_histogram_message_filter.h',
     'child/child_message_filter.cc',
     'child/child_message_filter.h',
     'child/child_process.cc',
     'child/child_process.h',
     'child/child_resource_message_filter.cc',
     'child/child_resource_message_filter.h',
+    'child/child_shared_bitmap_manager.cc',
+    'child/child_shared_bitmap_manager.h',
     'child/child_thread.cc',
     'child/child_thread.h',
     'child/content_child_helpers.cc',
     'child/content_child_helpers.h',
     'child/database_util.cc',
     'child/database_util.h',
     'child/db_message_filter.cc',
     'child/db_message_filter.h',
     'child/fileapi/file_system_dispatcher.cc',
     'child/fileapi/file_system_dispatcher.h',
@@ skipping 223 matching lines @@
         }, {
           'dependencies': [
             '../third_party/nss/nss.gyp:nspr',
             '../third_party/nss/nss.gyp:nss',
           ],
         }],
       ],
     }],
   ],
 }