Reland r131429 (Moved SuicideOnChannelErrorFilter to content.). Install it in renderer_main.cc so t…

content/renderer/renderer_main.cc

Index: content/renderer/renderer_main.cc
===================================================================
--- content/renderer/renderer_main.cc	(revision 131514)
+++ content/renderer/renderer_main.cc	(working copy)
@@ -69,6 +69,28 @@
 }
 
 }  // namespace
+
+class SuicideOnChannelErrorFilter : public IPC::ChannelProxy::MessageFilter {
+  void OnChannelError() {
+    // 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 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 channel so that we can process this event
+    // here and kill the process.
+
+    _exit(0);
+  }
+};
+
 #endif  // OS_MACOSX
 
 // This function provides some ways to test crash and assertion handling
@@ -228,6 +250,10 @@
     new RenderThreadImpl();
 #endif
 
+#if defined(OS_POSIX)
+    RenderThreadImpl::current()->AddFilter(new SuicideOnChannelErrorFilter());
+#endif
+
     platform.RunSandboxTests();
 
     startup_timer.Stop();  // End of Startup Time Measurement.