DevTools: make V8DebuggerAgent call Client instead of overriden methods

Source/core/inspector/InspectorDebuggerAgent.h

 /*
  * Copyright (C) 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010-2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 17 matching lines @@
  */
 
 #ifndef InspectorDebuggerAgent_h
 #define InspectorDebuggerAgent_h
 
 #include "core/CoreExport.h"
 #include "core/inspector/V8DebuggerAgent.h"
 
 namespace blink {
 
-class CORE_EXPORT InspectorDebuggerAgent : public V8DebuggerAgent {
+class CORE_EXPORT InspectorDebuggerAgent
+    : public V8DebuggerAgent
+    , public V8DebuggerAgent::Client {
 public:
     ~InspectorDebuggerAgent() override;
+    DECLARE_VIRTUAL_TRACE();
+
     void enable(ErrorString*) override;
 
+    // V8DebuggerAgent::Client implementation.
+    void startListeningV8Debugger() override;
+    void stopListeningV8Debugger() override;
+    bool canPauseOnPromiseEvent() final;
+    void didCreatePromise() final;
+    void didResolvePromise() final;
+    void didRejectPromise() final;
+
+    class CORE_EXPORT Listener : public WillBeGarbageCollectedMixin {
+    public:
+        virtual ~Listener() { }
+        virtual void debuggerWasEnabled() = 0;
+        virtual void debuggerWasDisabled() = 0;
+        virtual bool canPauseOnPromiseEvent() = 0;

[dgozman, 2015/08/12 02:00:05]

canPauseXXX is a strange method for the Listener.

+        virtual void didCreatePromise() = 0;
+        virtual void didResolvePromise() = 0;
+        virtual void didRejectPromise() = 0;
+    };
+    void setListener(Listener* listener) { m_listener = listener; }
+
 protected:
     InspectorDebuggerAgent(InjectedScriptManager*, V8Debugger*);
 
-    void enable() override;
-    void disable() override;
+private:
+    RawPtrWillBeMember<Listener> m_listener;
 };
 
 } // namespace blink
 
 
 #endif // !defined(InspectorDebuggerAgent_h)