[DevTools] Unpause renderer when paused RenderFrame is closed.

content/renderer/devtools/devtools_agent.h

Index: content/renderer/devtools/devtools_agent.h
diff --git a/content/renderer/devtools/devtools_agent.h b/content/renderer/devtools/devtools_agent.h
index 9db85c425c61487e2dfb97cd6f1a01bf8412aae7..1979f3882a194d3bab498b1cbd8f1fac4496df97 100644
--- a/content/renderer/devtools/devtools_agent.h
+++ b/content/renderer/devtools/devtools_agent.h
@@ -7,6 +7,7 @@
 
 #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"
@@ -22,8 +23,9 @@ 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;
@@ -43,8 +45,11 @@ class DevToolsAgent : public RenderFrameObserver,
   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,
@@ -72,6 +77,7 @@ class DevToolsAgent : public RenderFrameObserver,
   bool is_attached_;
   bool is_devtools_client_;
   bool paused_in_mouse_move_;
+  bool paused_;
   RenderFrameImpl* frame_;
 
   DISALLOW_COPY_AND_ASSIGN(DevToolsAgent);