Bring up of the metadata accessors for enhanced bookmarks.

components/enhanced_bookmarks.gypi

 # Copyright 2014 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': 'enhanced_bookmarks',
       'type': 'static_library',
       'include_dirs': [
         '..',
       ],
       'dependencies': [
         '../base/base.gyp:base',
         '../sql/sql.gyp:sql',
         '../ui/gfx/gfx.gyp:gfx',
         '../url/url.gyp:url_lib',
+        'enhanced_bookmarks_proto',
       ],
       'sources': [
         'enhanced_bookmarks/image_store.cc',
         'enhanced_bookmarks/image_store.h',
         'enhanced_bookmarks/image_store_util.cc',
         'enhanced_bookmarks/image_store_util.h',
         'enhanced_bookmarks/image_store_util_ios.mm',
+        'enhanced_bookmarks/metadata_accessor.cc',
+        'enhanced_bookmarks/metadata_accessor.h',
         'enhanced_bookmarks/persistent_image_store.cc',
         'enhanced_bookmarks/persistent_image_store.h',
       ],
       'conditions': [
         ['OS=="ios"', {
           'sources!': [
             'enhanced_bookmarks/image_store_util.cc',
           ],
         }],
       ],
     },
     {
       'target_name': 'enhanced_bookmarks_test_support',
       'type': 'static_library',
       'include_dirs': [
         '..',
       ],
       'dependencies': [
         '../testing/gtest.gyp:gtest',
         'enhanced_bookmarks',
       ],
       'sources': [
         'enhanced_bookmarks/test_image_store.cc',
         'enhanced_bookmarks/test_image_store.h',
       ],
     },
+    {
+      'target_name': 'enhanced_bookmarks_proto',
+      'type': 'static_library',
+      'sources': [
+        'enhanced_bookmarks/proto/metadata.proto',
+      ],
+      'variables': {
+        'proto_in_dir': './enhanced_bookmarks/proto',
+        'proto_out_dir': 'components/enhanced_bookmarks/proto',
+      },
+      'includes': [ '../build/protoc.gypi' ],
+    },
   ],
 }