Try to diagnose blink reinitialisation in WebView.

content/renderer/render_thread_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.
 
 #include "content/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <utility>
@@ skipping 830 matching lines @@
 #endif
 
   service_registry()->ConnectToRemoteService(
       mojo::GetProxy(&storage_partition_service_));
 }
 
 RenderThreadImpl::~RenderThreadImpl() {
 }
 
 void RenderThreadImpl::Shutdown() {
+#if defined(OS_ANDROID)
+  // Don't allow the render thread to be shut down in single process mode on
+  // Android. Temporary CHECK() to debug http://crbug.com/514141
+  CHECK(!base::CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kSingleProcess));
+#endif
+
   FOR_EACH_OBSERVER(
       RenderThreadObserver, observers_, OnRenderProcessShutdown());
 
   if (memory_observer_) {
     message_loop()->RemoveTaskObserver(memory_observer_.get());
     memory_observer_.reset();
   }
 
   // Wait for all databases to be closed.
   if (blink_platform_impl_) {
@@ skipping 1285 matching lines @@
 }
 
 void RenderThreadImpl::PendingRenderFrameConnect::OnConnectionError() {
   size_t erased =
       RenderThreadImpl::current()->pending_render_frame_connects_.erase(
           routing_id_);
   DCHECK_EQ(1u, erased);
 }
 
 }  // namespace content