Remove code that is unused after ContextMenu cleanup

Source/WebKit/chromium/src/FrameLoaderClientImpl.h

 /*
  * Copyright (C) 2009, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2011 Apple 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.
@@ skipping 107 matching lines @@
     virtual void didDisplayInsecureContent();
     virtual void didRunInsecureContent(WebCore::SecurityOrigin*, const WebCore::KURL& insecureURL);
     virtual void didDetectXSS(const WebCore::KURL&, bool didBlockEntirePage);
     virtual WebCore::ResourceError cancelledError(const WebCore::ResourceRequest&);
     virtual WebCore::ResourceError cannotShowURLError(const WebCore::ResourceRequest&);
     virtual WebCore::ResourceError interruptedForPolicyChangeError(const WebCore::ResourceRequest&);
     virtual WebCore::ResourceError cannotShowMIMETypeError(const WebCore::ResourceResponse&);
     virtual WebCore::ResourceError fileDoesNotExistError(const WebCore::ResourceResponse&);
     virtual WebCore::ResourceError pluginWillHandleLoadError(const WebCore::ResourceResponse&);
     virtual bool shouldFallBack(const WebCore::ResourceError&);
-    virtual bool canHandleRequest(const WebCore::ResourceRequest&) const;
     virtual bool canShowMIMEType(const WTF::String& MIMEType) const;
     virtual WTF::String generatedMIMETypeForURLScheme(const WTF::String& URLScheme) const;
     virtual void didFinishLoad();
     virtual PassRefPtr<WebCore::DocumentLoader> createDocumentLoader(
         const WebCore::ResourceRequest&, const WebCore::SubstituteData&);
     virtual WTF::String userAgent(const WebCore::KURL&);
     virtual WTF::String doNotTrackValue();
     virtual void transitionToCommittedForNewPage();
     virtual PassRefPtr<WebCore::Frame> createFrame(
         const WebCore::KURL& url, const WTF::String& name,
@@ skipping 66 matching lines @@
     // which specifies that the plugin should be ready to accept data.
     bool m_sentInitialResponseToPlugin;
 
     // The navigation policy to use for the next call to dispatchCreatePage.
     WebNavigationPolicy m_nextNavigationPolicy;
 };
 
 } // namespace WebKit
 
 #endif