Convert network hints to Mojo

chrome/browser/chrome_content_browser_client.cc

 // 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.
 
 #include "chrome/browser/chrome_content_browser_client.h"
 
 #include <map>
 #include <set>
 #include <utility>
 #include <vector>
@@ skipping 949 matching lines @@
   return chrome::CreateWebContentsViewDelegate(web_contents);
 }
 
 void ChromeContentBrowserClient::RenderProcessWillLaunch(
     content::RenderProcessHost* host) {
   int id = host->GetID();
   Profile* profile = Profile::FromBrowserContext(host->GetBrowserContext());
   net::URLRequestContextGetter* context =
       host->GetStoragePartition()->GetURLRequestContext();
 
-  host->AddFilter(new ChromeRenderMessageFilter(id, profile));
+  // The host owns both |chrome_render| and the interface registry, which will
+  // be destroyed before the filter.
+  auto chrome_render_filter = new ChromeRenderMessageFilter(id, profile);

[dcheng, 2016/07/20 13:59:50]

Nit: auto*

[tibell, 2016/07/21 00:12:06]

Done.

+  host->GetInterfaceRegistry()->AddInterface(
+      base::Bind(&ChromeRenderMessageFilter::BindNetworkHints,
+                 base::Unretained(chrome_render_filter)),
+      BrowserThread::GetTaskRunnerForThread(BrowserThread::IO));
+  host->AddFilter(chrome_render_filter);
 #if defined(ENABLE_EXTENSIONS)
   host->AddFilter(new cast::CastTransportHostFilter);
 #endif
 #if defined(ENABLE_PRINTING)
   host->AddFilter(new printing::PrintingMessageFilter(id, profile));
 #endif
   host->AddFilter(new SearchProviderInstallStateMessageFilter(id, profile));
 #if defined(ENABLE_SPELLCHECK)
   host->AddFilter(new SpellCheckMessageFilter(id));
 #endif
@@ skipping 2066 matching lines @@
   if (channel <= kMaxDisableEncryptionChannel) {
     static const char* const kWebRtcDevSwitchNames[] = {
       switches::kDisableWebRtcEncryption,
     };
     to_command_line->CopySwitchesFrom(from_command_line,
                                       kWebRtcDevSwitchNames,
                                       arraysize(kWebRtcDevSwitchNames));
   }
 }
 #endif  // defined(ENABLE_WEBRTC)