Implement web speech synthesis.

chrome/chrome_common.gypi

 # Copyright (c) 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.
 
 {
   'targets': [
     {
       'target_name': 'common',
       'type': 'static_library',
       'variables': {
@@ skipping 387 matching lines @@
         'common/spellcheck_messages.h',
         'common/spellcheck_result.h',
         'common/startup_metric_utils.cc',
         'common/startup_metric_utils.h',
         'common/switch_utils.cc',
         'common/switch_utils.h',
         'common/thumbnail_score.cc',
         'common/thumbnail_score.h',
         'common/time_format.cc',
         'common/time_format.h',
+        'common/tts_messages.cc',
+        'common/tts_messages.h',
+        'common/tts_utterance_request.cc',
+        'common/tts_utterance_request.h',
         'common/url_constants.cc',
         'common/url_constants.h',
         'common/web_apps.cc',
         'common/web_apps.h',
         'common/web_resource/web_resource_unpacker.cc',
         'common/web_resource/web_resource_unpacker.h',
         'common/worker_thread_ticker.cc',
         'common/worker_thread_ticker.h',
       ],
       'conditions': [
@@ skipping 318 matching lines @@
         'common/metrics/proto/user_action_event.proto',
       ],
       'variables': {
         'proto_in_dir': 'common/metrics/proto',
         'proto_out_dir': 'chrome/common/metrics/proto',
       },
       'includes': [ '../build/protoc.gypi' ],
     },
   ],
 }