Eliminate WebViewImpl's dependency on WebDevToolsAgentImpl....

webkit/api/public/WebDevToolsAgent.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 16 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef WebDevToolsAgent_h
 #define WebDevToolsAgent_h
 
 #include "WebCommon.h"
 
 namespace WebKit {
+class WebDevToolsAgentClient;
 class WebString;
+class WebView;
 struct WebPoint;
 
 class WebDevToolsAgent {
 public:
+    WEBKIT_API static WebDevToolsAgent* create(WebView*, WebDevToolsAgentClient*);
+
+    virtual ~WebDevToolsAgent() {}
+
     virtual void attach() = 0;
     virtual void detach() = 0;
 
     virtual void didNavigate() = 0;
 
     virtual void dispatchMessageFromFrontend(const WebString& className,
                                              const WebString& methodName,
                                              const WebString& param1,
                                              const WebString& param2,
                                              const WebString& param3) = 0;
 
     virtual void inspectElementAt(const WebPoint&) = 0;
 
     virtual void setRuntimeFeatureEnabled(const WebString& feature, bool enabled) = 0;
 
     // Asynchronously executes debugger command in the render thread.
     // |callerIdentifier| will be used for sending response.
     WEBKIT_API static void executeDebuggerCommand(
         const WebString& command, int callerIdentifier);
 
     typedef void (*MessageLoopDispatchHandler)();
 
     // Installs dispatch handle that is going to be called periodically
     // while on a breakpoint.
-    static void setMessageLoopDispatchHandler(MessageLoopDispatchHandler);
-
-protected:
-    ~WebDevToolsAgent() {}
+    WEBKIT_API static void setMessageLoopDispatchHandler(MessageLoopDispatchHandler);
 };
 
 } // namespace WebKit
 
 #endif