Remove FrameViewBase as base class of RemoteFrameView.

third_party/WebKit/Source/modules/plugins/PluginOcclusionSupport.h

 /*
     Copyright (C) 2011 Robert Hogan <robert@roberthogan.net>.
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
 
     This library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Library General Public License for more details.
 
     You should have received a copy of the GNU Library General Public License
     along with this library; see the file COPYING.LIB.  If not, write to
     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA 02110-1301, USA.
 */
 
 #ifndef PluginOcclusionSupport_h
 #define PluginOcclusionSupport_h
 
 #include "modules/ModulesExport.h"
 #include "platform/wtf/Vector.h"
 
 namespace blink {
 class Element;
-class FrameViewBase;
+class FrameView;
 class IntRect;
 
 MODULES_EXPORT void GetPluginOcclusions(Element*,
-                                        FrameViewBase* parent,
+                                        FrameView* parent,
                                         const IntRect& frame_rect,
                                         Vector<IntRect>& occlusions);
 
 }  // namespace blink
 
 #endif  // PluginOcclusionSupport_h