[DevTools] Unpause renderer when paused RenderFrame is closed.

content/renderer/devtools/devtools_agent.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_RENDERER_DEVTOOLS_DEVTOOLS_AGENT_H_
 #define CONTENT_RENDERER_DEVTOOLS_DEVTOOLS_AGENT_H_
 
 #include <string>
 
+#include "content/common/content_export.h"
 #include "content/public/common/console_message_level.h"
 #include "content/public/renderer/render_frame_observer.h"
 #include "third_party/WebKit/public/web/WebDevToolsAgentClient.h"
 
 namespace blink {
 class WebDevToolsAgent;
 }
 
 namespace content {
 
 class RenderFrameImpl;
 
 // DevToolsAgent belongs to the inspectable RenderFrameImpl and communicates
 // with WebDevToolsAgent. There is a corresponding DevToolsAgentHost
 // on the browser side.
-class DevToolsAgent : public RenderFrameObserver,
-                      public blink::WebDevToolsAgentClient {
+class CONTENT_EXPORT DevToolsAgent
+    : public RenderFrameObserver,
+      NON_EXPORTED_BASE(public blink::WebDevToolsAgentClient) {
  public:
   explicit DevToolsAgent(RenderFrameImpl* frame);
   ~DevToolsAgent() override;
 
   // Returns agent instance for its routing id.
   static DevToolsAgent* FromRoutingId(int routing_id);
 
   static void SendChunkedProtocolMessage(
       IPC::Sender* sender,
       int routing_id,
       int call_id,
       const std::string& message,
       const std::string& post_state);
 
   blink::WebDevToolsAgent* GetWebAgent();
 
   bool IsAttached();
 
  private:
+  friend class DevToolsAgentTest;
+
   // RenderFrameObserver implementation.
   bool OnMessageReceived(const IPC::Message& message) override;
+  void WidgetWillClose() override;
 
   // WebDevToolsAgentClient implementation.
   void sendProtocolMessage(int call_id,
                            const blink::WebString& response,
                            const blink::WebString& state) override;
   blink::WebDevToolsAgentClient::WebKitClientMessageLoop*
       createClientMessageLoop() override;
   void willEnterDebugLoop() override;
   void didExitDebugLoop() override;
 
   void enableTracing(const blink::WebString& category_filter) override;
   void disableTracing() override;
 
   void OnAttach(const std::string& host_id);
   void OnReattach(const std::string& host_id,
                   const std::string& agent_state);
   void OnDetach();
   void OnDispatchOnInspectorBackend(const std::string& message);
   void OnInspectElement(const std::string& host_id, int x, int y);
   void OnAddMessageToConsole(ConsoleMessageLevel level,
                              const std::string& message);
   void ContinueProgram();
   void OnSetupDevToolsClient();
 
   bool is_attached_;
   bool is_devtools_client_;
   bool paused_in_mouse_move_;
+  bool paused_;
   RenderFrameImpl* frame_;
 
   DISALLOW_COPY_AND_ASSIGN(DevToolsAgent);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_DEVTOOLS_DEVTOOLS_AGENT_H_