On Posix, make all child processes quit when the browser dies, not just the renderers.

content/renderer/renderer_main.cc

Index: content/renderer/renderer_main.cc
===================================================================
--- content/renderer/renderer_main.cc	(revision 148974)
+++ content/renderer/renderer_main.cc	(working copy)
@@ -70,45 +70,6 @@
 
 #endif  // OS_MACOSX
 
-#if defined(OS_POSIX)
-
-class SuicideOnChannelErrorFilter : public IPC::ChannelProxy::MessageFilter {
- public:
-  // IPC::ChannelProxy::MessageFilter
-  virtual void OnChannelError() OVERRIDE {
-    // 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.
-    //
-    // We want to kill this process after giving it 30 seconds to run the exit
-    // handlers. SIGALRM has a default disposition of terminating the
-    // application.
-#if defined(OS_POSIX)
-    if (CommandLine::ForCurrentProcess()->
-        HasSwitch(switches::kRendererCleanExit))
-      alarm(30);
-    else
-#endif
-      _exit(0);
-  }
-
- protected:
-  virtual ~SuicideOnChannelErrorFilter() {}
-};
-
-#endif  // OS(POSIX)
-
 }  // namespace
 
 // This function provides some ways to test crash and assertion handling
@@ -246,10 +207,6 @@
     new RenderThreadImpl();
 #endif
 
-#if defined(OS_POSIX)
-    RenderThreadImpl::current()->AddFilter(new SuicideOnChannelErrorFilter());
-#endif
-
     platform.RunSandboxTests();
 
     startup_timer.Stop();  // End of Startup Time Measurement.