Move Get/SetScrollOffset methods from WebFrame to WebLocalFrame.

third_party/WebKit/public/web/WebLocalFrame.h

 // 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.
 
 #ifndef WebLocalFrame_h
 #define WebLocalFrame_h
 
 #include <memory>
 #include <set>
 
@@ skipping 671 matching lines @@
   virtual WebInputMethodController* GetInputMethodController() = 0;
 
   // Loading ------------------------------------------------------------------
 
   // Creates and returns a loader. This function can be called only when this
   // frame is attached to a document.
   virtual std::unique_ptr<WebURLLoader> CreateURLLoader() = 0;
 
   // Geometry -----------------------------------------------------------------
 
+  // The scroll offset from the top-left corner of the frame in pixels.
+  virtual WebSize GetScrollOffset() const = 0;
+  virtual void SetScrollOffset(const WebSize&) = 0;
+
   // If set to false, do not draw scrollbars on this frame's view.
   virtual void SetCanHaveScrollbars(bool) = 0;
 
   // Printing ------------------------------------------------------------
 
   // Reformats the WebFrame for printing. WebPrintParams specifies the printable
   // content size, paper size, printable area size, printer DPI and print
   // scaling option. If constrainToNode node is specified, then only the given
   // node is printed (for now only plugins are supported), instead of the entire
   // frame.
@@ skipping 44 matching lines @@
   // to call these on a WebLocalFrame.
   bool IsWebLocalFrame() const override = 0;
   WebLocalFrame* ToWebLocalFrame() override = 0;
   bool IsWebRemoteFrame() const override = 0;
   WebRemoteFrame* ToWebRemoteFrame() override = 0;
 };
 
 }  // namespace blink
 
 #endif  // WebLocalFrame_h