Move isLoading() from WebFrame to WebLocalFrame

Source/web/WebRemoteFrameImpl.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "web/WebRemoteFrameImpl.h"
 
 #include "core/frame/FrameOwner.h"
 #include "core/frame/RemoteFrame.h"
 #include "core/frame/Settings.h"
@@ skipping 376 matching lines @@
     ASSERT_NOT_REACHED();
 }
 
 void WebRemoteFrameImpl::loadHTMLString(
     const WebData& html, const WebURL& baseURL, const WebURL& unreachableURL,
     bool replace)
 {
     ASSERT_NOT_REACHED();
 }
 
-bool WebRemoteFrameImpl::isLoading() const
-{
-    ASSERT_NOT_REACHED();
-    return false;
-}
-
 void WebRemoteFrameImpl::stopLoading()
 {
     ASSERT_NOT_REACHED();
 }
 
 WebDataSource* WebRemoteFrameImpl::provisionalDataSource() const
 {
     ASSERT_NOT_REACHED();
     return 0;
 }
@@ skipping 421 matching lines @@
 
 WebRemoteFrameImpl* WebRemoteFrameImpl::fromFrame(RemoteFrame& frame)
 {
     if (!frame.client())
         return 0;
     return static_cast<RemoteFrameClient*>(frame.client())->webFrame();
 }
 
 } // namespace blink