Add a Content API around BrowserChildProcessHost, similar to what was done with ChildProcessHost....

content/browser/browser_process_sub_thread.cc

 // Copyright (c) 2011 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 "content/browser/browser_process_sub_thread.h"
 
 #if defined(OS_WIN)
 #include <Objbase.h>
 #endif
 
@@ skipping 51 matching lines @@
   // net::URLRequest/net::URLRequestContexts.
 
   // Destroy all URLRequests started by URLFetchers.
   content::URLFetcher::CancelAll();
 
   IndexedDBKeyUtilityClient::Shutdown();
 
   // If any child processes are still running, terminate them and
   // and delete the BrowserChildProcessHost instances to release whatever
   // IO thread only resources they are referencing.
-  BrowserChildProcessHost::TerminateAll();
+  ::BrowserChildProcessHost::TerminateAll();
 }
 
 void BrowserProcessSubThread::IOThreadPostCleanUp() {
   // net::URLRequest instances must NOT outlive the IO thread.
   base::debug::LeakTracker<net::URLRequest>::CheckForLeaks();
 }
 
 }  // namespace content