Move isLoading() from WebFrame to WebLocalFrame

public/web/WebFrame.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 353 matching lines @@
                           const WebURL& unreachableURL = WebURL(),
                           bool replace = false) = 0;
 
     // This method is short-hand for calling LoadData, where mime_type is
     // "text/html" and text_encoding is "UTF-8".
     virtual void loadHTMLString(const WebData& html,
                                 const WebURL& baseURL,
                                 const WebURL& unreachableURL = WebURL(),
                                 bool replace = false) = 0;
 
-    // Returns true if the current frame is busy loading content.
-    virtual bool isLoading() const = 0;
-
     // Stops any pending loads on the frame and its children.
     virtual void stopLoading() = 0;
 
     // Returns the data source that is currently loading.  May be null.
     virtual WebDataSource* provisionalDataSource() const = 0;
 
     // Returns the data source that is currently loaded.
     virtual WebDataSource* dataSource() const = 0;
 
     // View-source rendering mode.  Set this before loading an URL to cause
@@ skipping 315 matching lines @@
     WebPrivateOwnPtr<OpenedFrameTracker> m_openedFrameTracker;
 };
 
 #if BLINK_IMPLEMENTATION
 Frame* toCoreFrame(const WebFrame*);
 #endif
 
 } // namespace blink
 
 #endif