Copy a few selection related methods to WebFrame from WebView.

Source/web/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 2012 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 2272 matching lines @@
     LocalFrame* focused = focusedWebCoreFrame();
     if (!focused)
         return;
     if (WebPlugin* plugin = focusedPluginIfInputMethodSupported(focused)) {
         plugin->extendSelectionAndDelete(before, after);
         return;
     }
     focused->inputMethodController().extendSelectionAndDelete(before, after);
 }
 
-bool WebViewImpl::isSelectionEditable() const
-{
-    if (const LocalFrame* frame = focusedWebCoreFrame())
-        return frame->selection().isContentEditable();
-    return false;
-}
-
 WebColor WebViewImpl::backgroundColor() const
 {
     if (isTransparent())
         return Color::transparent;
     if (!m_page)
         return m_baseBackgroundColor;
     if (!m_page->mainFrame())
         return m_baseBackgroundColor;
     FrameView* view = m_page->mainFrame()->view();
     return view->documentBackgroundColor().rgb();
@@ skipping 1687 matching lines @@
     const PageScaleConstraints& constraints = m_pageScaleConstraintsSet.pageDefinedConstraints();
 
     if (!mainFrameImpl() || !mainFrameImpl()->frameView())
         return false;
 
     return mainFrameImpl()->frameView()->layoutSize().width() == m_size.width
         || (constraints.minimumScale == constraints.maximumScale && constraints.minimumScale != -1);
 }
 
 } // namespace blink