Inspector: replace generic discardAgents logic with explicit call to discard a listener.

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 9b8bf3702bb2148442e035ec75ecbc31a58eda90..2b57b75941bf1fd0e49a3542887a3815bf5c52e3 100644
--- a/Source/core/inspector/InspectorDebuggerAgent.h
+++ b/Source/core/inspector/InspectorDebuggerAgent.h
@@ -134,6 +134,7 @@ public:
         virtual void debuggerWasDisabled() = 0;
         virtual void stepInto() = 0;
         virtual void didPause() = 0;
+        virtual void discardListener() = 0;

[vsevik, 2013/06/14 06:30:24]

willDestroyDebuggerAgent

     };
     void setListener(Listener* listener) { m_listener = listener; }