[DevTools] Preserve DevTools for crashed page.

content/browser/devtools/render_frame_devtools_agent_host.h

 // 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.
 
 #ifndef CONTENT_BROWSER_DEVTOOLS_RENDER_FRAME_DEVTOOLS_AGENT_HOST_H_
 #define CONTENT_BROWSER_DEVTOOLS_RENDER_FRAME_DEVTOOLS_AGENT_HOST_H_
 
 #include <map>
 
 #include "base/basictypes.h"
@@ skipping 122 matching lines @@
   scoped_ptr<devtools::power::PowerHandler> power_handler_;
   scoped_ptr<devtools::service_worker::ServiceWorkerHandler>
       service_worker_handler_;
   scoped_ptr<devtools::tracing::TracingHandler> tracing_handler_;
   scoped_ptr<devtools::emulation::EmulationHandler> emulation_handler_;
   scoped_ptr<DevToolsFrameTraceRecorder> frame_trace_recorder_;
 #if defined(OS_ANDROID)
   scoped_ptr<PowerSaveBlockerImpl> power_save_blocker_;
 #endif
   scoped_ptr<DevToolsProtocolHandler> protocol_handler_;
+  bool frame_crashed_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameDevToolsAgentHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVTOOLS_RENDER_FRAME_DEVTOOLS_AGENT_HOST_H_