Add autoresize capability for Chromium.

Source/WebKit/chromium/public/WebFrame.h

 /*
  * Copyright (C) 2009 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 142 matching lines @@
     // If set to false, do not draw scrollbars on this frame's view.
     virtual void setCanHaveScrollbars(bool) = 0;
 
     // The scroll offset from the top-left corner of the frame in pixels.
     virtual WebSize scrollOffset() const = 0;
     virtual void setScrollOffset(const WebSize&) = 0;
 
     // The minimum and maxium scroll positions in pixels.
     virtual WebSize minimumScrollOffset() const = 0;
     virtual WebSize maximumScrollOffset() const = 0;
- 
+
     // The size of the contents area.
     virtual WebSize contentsSize() const = 0;
 
     // Returns the minimum preferred width of the content contained in the
     // current document.
     virtual int contentsPreferredWidth() const = 0;
 
     // Returns the scroll height of the document element. This is
     // equivalent to the DOM property of the same name, and is the minimum
     // height required to display the document without scrollbars.
@@ skipping 441 matching lines @@
     // text form. This is used only by layout tests.
     virtual WebString layerTreeAsText(bool showDebugInfo = false) const = 0;
 
 protected:
     ~WebFrame() { }
 };
 
 } // namespace WebKit
 
 #endif