DevTools: make V8DebuggerAgent call Client instead of overriden methods

Source/core/inspector/InspectorDebuggerAgent.h

Index: Source/core/inspector/InspectorDebuggerAgent.h
diff --git a/Source/core/inspector/InspectorDebuggerAgent.h b/Source/core/inspector/InspectorDebuggerAgent.h
index 5c1febac513706ecde09cb3b206ddcef32ac38ed..a0116d4e61c539729ec9c6a367c43fdab420fa71 100644
--- a/Source/core/inspector/InspectorDebuggerAgent.h
+++ b/Source/core/inspector/InspectorDebuggerAgent.h
@@ -35,16 +35,40 @@
 
 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