Add RoutingIDIssuer to ensure the correctness of ID to be routed.

content/content_browser.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.
 
 {
   'dependencies': [
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../google_apis/google_apis.gyp:google_apis',
     '../net/net.gyp:net',
@@ skipping 1095 matching lines @@
       'browser/renderer_host/render_widget_host_view_mac_dictionary_helper.h',
       'browser/renderer_host/render_widget_host_view_mac_dictionary_helper.mm',
       'browser/renderer_host/render_widget_host_view_mac_editcommand_helper.h',
       'browser/renderer_host/render_widget_host_view_mac_editcommand_helper.mm',
       'browser/renderer_host/render_widget_host_view_mac.h',
       'browser/renderer_host/render_widget_host_view_mac.mm',
       'browser/renderer_host/render_widget_resize_helper.cc',
       'browser/renderer_host/render_widget_resize_helper.h',
       'browser/renderer_host/renderer_frame_manager.cc',
       'browser/renderer_host/renderer_frame_manager.h',
+      'browser/renderer_host/routing_id_issuer.cc',
+      'browser/renderer_host/routing_id_issuer.h',
       'browser/renderer_host/sandbox_ipc_linux.cc',
       'browser/renderer_host/sandbox_ipc_linux.h',
       'browser/renderer_host/software_frame_manager.cc',
       'browser/renderer_host/software_frame_manager.h',
       'browser/renderer_host/socket_stream_dispatcher_host.cc',
       'browser/renderer_host/socket_stream_dispatcher_host.h',
       'browser/renderer_host/socket_stream_host.cc',
       'browser/renderer_host/socket_stream_host.h',
       'browser/renderer_host/text_input_client_mac.h',
       'browser/renderer_host/text_input_client_mac.mm',
@@ skipping 788 matching lines @@
       'sources': [
         'browser/media/cdm/browser_cdm_manager.cc',
         'browser/media/cdm/browser_cdm_manager.h',
         # This works on Android because enable_browser_cdms==1 on Android.
         'browser/media/media_web_contents_observer.cc',
         'browser/media/media_web_contents_observer.h',
       ],
     }],
   ],
 }