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

content/browser/renderer_host/render_process_host_impl.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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #if defined(OS_WIN)
@@ skipping 787 matching lines @@
     switches::kInProcessWebGL,
     switches::kJavaScriptFlags,
     switches::kLoggingLevel,
     switches::kOldCheckboxStyle,
     switches::kNoReferrers,
     switches::kNoSandbox,
     switches::kPpapiOutOfProcess,
     switches::kRegisterPepperPlugins,
     switches::kRendererAssertTest,
 #if defined(OS_POSIX)
-    switches::kRendererCleanExit,
+    switches::kChildCleanExit,
 #endif
     switches::kRendererStartupDialog,
     switches::kShowPaintRects,
     switches::kTestSandbox,
     switches::kTraceStartup,
     // This flag needs to be propagated to the renderer process for
     // --in-process-webgl.
     switches::kUseGL,
     switches::kUserAgent,
     switches::kV,
@@ skipping 691 matching lines @@
       int32 route_id,
       int32 gpu_process_host_id) {
   TRACE_EVENT0("renderer_host",
                "RenderWidgetHostImpl::OnCompositorSurfaceBuffersSwappedNoHost");
   RenderWidgetHostImpl::AcknowledgeBufferPresent(route_id,
                                                  gpu_process_host_id,
                                                  0);
 }
 
 }  // namespace content