Add PlatformFrameView class.

third_party/WebKit/Source/core/page/AutoscrollController.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ skipping 348 matching lines @@
           result = ToLayoutBox(layout_object)->Scroll(kScrollByPixel, delta);
       }
       if (result.DidScroll()) {
         did_latch_for_middle_click_autoscroll_ = true;
         autoscroll_layout_object_ = ToLayoutBox(layout_object);
       }
       break;
   }
   if (autoscroll_type_ != kNoAutoscroll && autoscroll_layout_object_) {
     page_->GetChromeClient().ScheduleAnimation(
-        autoscroll_layout_object_->GetFrame());
+        autoscroll_layout_object_->GetFrame()->View());
   }
 }
 
 void AutoscrollController::StartAutoscroll() {
   page_->GetChromeClient().ScheduleAnimation(
-      autoscroll_layout_object_->GetFrame());
+      autoscroll_layout_object_->GetFrame()->View());
 }
 
 void AutoscrollController::UpdateMiddleClickAutoscrollState(
     FrameView* view,
     const IntPoint& last_known_mouse_position) {
   DCHECK(RuntimeEnabledFeatures::middleClickAutoscrollEnabled());
   // At the original click location we draw a 4 arrowed icon. Over this icon
   // there won't be any scroll, So don't change the cursor over this area.
   bool east = middle_click_autoscroll_start_pos_.X() <
               (last_known_mouse_position.X() - kNoMiddleClickAutoscrollRadius);
@@ skipping 25 matching lines @@
   } else if (east) {
     view->SetCursor(EastPanningCursor());
   } else if (west) {
     view->SetCursor(WestPanningCursor());
   } else {
     view->SetCursor(MiddlePanningCursor());
   }
 }
 
 }  // namespace blink