[DevTools] Do not instrument with InspectorInspectorAgent.

Source/core/inspector/InspectorInspectorAgent.h

Index: Source/core/inspector/InspectorInspectorAgent.h
diff --git a/Source/core/inspector/InspectorInspectorAgent.h b/Source/core/inspector/InspectorInspectorAgent.h
index 158197b56c76cb76b9b94f40bf0dc41c61e9a3fd..6115b5c6da8667713faf5dc1e93b99b11222cfdc 100644
--- a/Source/core/inspector/InspectorInspectorAgent.h
+++ b/Source/core/inspector/InspectorInspectorAgent.h
@@ -58,11 +58,9 @@ public:
     void enable(ErrorString*) override;
 
     // InspectorAgent overrides.
-    void init() override;
     void disable(ErrorString*) override;
-    void domContentLoadedEventFired(LocalFrame*);
-
-    bool hasFrontend() const { return frontend(); }
+    void didCommitLoadForLocalFrame(LocalFrame*) override;
+    void restore() override;
 
     // Generic code called from custom implementations.
     void evaluateForTestInFrontend(long testCallId, const String& script);