Eliminate WebViewImpl's dependency on WebDevToolsAgentImpl....

webkit/api/public/WebView.h

 /*
  * Copyright (C) 2009 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 188 matching lines @@
 
         // Inspect a particular point in the WebView.  (x = -1 || y = -1) is a
         // special case, meaning inspect the current page and not a specific
         // point.
         virtual void inspectElementAt(const WebPoint&) = 0;
 
         // Settings used by the inspector.
         virtual WebString inspectorSettings() const = 0;
         virtual void setInspectorSettings(const WebString&) = 0;
 
+        // The embedder may optionally engage a WebDevToolsAgent.  This may only
+        // be set once per WebView.
         virtual WebDevToolsAgent* devToolsAgent() = 0;
+        virtual void setDevToolsAgent(WebDevToolsAgent*) = 0;
 
 
         // Accessibility -------------------------------------------------------
 
         // Returns the accessibility object for this view.
         virtual WebAccessibilityObject accessibilityObject() = 0;
 
 
         // Autofill ------------------------------------------------------------
 
@@ skipping 18 matching lines @@
         WEBKIT_API static void resetVisitedLinkState();
 
 
     protected:
         ~WebView() {}
     };
 
 } // namespace WebKit
 
 #endif