Chromecast: add platform hooks to inject browser/renderer message filters.

chromecast/browser/cast_content_browser_client.cc

 // 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.
 
 #include "chromecast/browser/cast_content_browser_client.h"
 
 #include <string>
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
@@ skipping 55 matching lines @@
     content::RenderProcessHost* host) {
   scoped_refptr<content::BrowserMessageFilter> network_hints_message_filter(
       new network_hints::NetworkHintsMessageFilter(
           url_request_context_factory_->host_resolver()));
   host->AddFilter(network_hints_message_filter.get());
 #if !defined(OS_ANDROID)
   scoped_refptr<media::CmaMessageFilterHost> cma_message_filter(
       new media::CmaMessageFilterHost(host->GetID()));
   host->AddFilter(cma_message_filter.get());
 #endif  // !defined(OS_ANDROID)
+
+  auto extra_filters = PlatformGetBrowserMessageFilters();
+  for (auto const& filter : extra_filters) {
+    host->AddFilter(filter.get());
+  }
 }
 
 net::URLRequestContextGetter* CastContentBrowserClient::CreateRequestContext(
     content::BrowserContext* browser_context,
     content::ProtocolHandlerMap* protocol_handlers,
     content::URLRequestInterceptorScopedVector request_interceptors) {
   return url_request_context_factory_->CreateMainGetter(
       browser_context,
       protocol_handlers,
       request_interceptors.Pass());
@@ skipping 248 matching lines @@
         process_type, dumps_path, false /* upload */);
   // StartUploaderThread() even though upload is diferred.
   // Breakpad-related memory is freed in the uploader thread.
   crash_handler->StartUploaderThread();
   return crash_handler;
 }
 #endif  // !defined(OS_ANDROID)
 
 }  // namespace shell
 }  // namespace chromecast