Revert 276939 "Decouple IPC::MessageFilter from IPC::Channel"

content/child/child_thread.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 "content/child/child_thread.h"
 
 #include <signal.h>
 
 #include <string>
 
@@ skipping 102 matching lines @@
 
 class SuicideOnChannelErrorFilter : public IPC::MessageFilter {
  public:
   // IPC::MessageFilter
   virtual void OnChannelError() OVERRIDE {
     // For renderer/worker processes:
     // On POSIX, at least, one can install an unload handler which loops
     // forever and leave behind a renderer process which eats 100% CPU forever.
     //
     // This is because the terminate signals (ViewMsg_ShouldClose and the error
-    // from the IPC sender) are routed to the main message loop but never
+    // from the IPC channel) are routed to the main message loop but never
     // processed (because that message loop is stuck in V8).
     //
     // One could make the browser SIGKILL the renderers, but that leaves open a
     // large window where a browser failure (or a user, manually terminating
     // the browser because "it's stuck") will leave behind a process eating all
     // the CPU.
     //
-    // So, we install a filter on the sender so that we can process this event
+    // So, we install a filter on the channel so that we can process this event
     // here and kill the process.
     // TODO(earthdok): Re-enable on CrOS http://crbug.com/360622
 #if (defined(ADDRESS_SANITIZER) || defined(LEAK_SANITIZER) || \
     defined(THREAD_SANITIZER)) && !defined(OS_CHROMEOS)
     // Some sanitizer tools rely on exit handlers (e.g. to run leak detection,
     // or dump code coverage data to disk). Instead of exiting the process
     // immediately, we give it 60 seconds to run exit handlers.
     CHECK(CreateWaitAndExitThread(base::TimeDelta::FromSeconds(60)));
 #if defined(LEAK_SANITIZER)
     // Invoke LeakSanitizer early to avoid detecting shutdown-only leaks. If
@@ skipping 419 matching lines @@
   base::MessageLoop::current()->SetTimerSlack(timer_slack);
 
 #ifdef OS_WIN
   // Windows Vista+ has a fancy process backgrounding mode that can only be set
   // from within the process.
   base::Process::Current().SetProcessBackgrounded(background);
 #endif  // OS_WIN
 }
 
 }  // namespace content