views: Move fill_layout.[cc,h] into layout directory.

views/layout/fill_layout.h

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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 VIEWS_FILL_LAYOUT_H_
-#define VIEWS_FILL_LAYOUT_H_
+#ifndef VIEWS_LAYOUT_FILL_LAYOUT_H_
+#define VIEWS_LAYOUT_FILL_LAYOUT_H_
 #pragma once
 
 #include "views/layout_manager.h"
 #include "views/view.h"
 
 namespace views {
 
 ///////////////////////////////////////////////////////////////////////////////
 //
 // FillLayout
 //  A simple LayoutManager that causes the associated view's one child to be
 //  sized to match the bounds of its parent.
 //
 ///////////////////////////////////////////////////////////////////////////////
 class FillLayout : public LayoutManager {
  public:
   FillLayout();
   virtual ~FillLayout();
 
   // Overridden from LayoutManager:
   virtual void Layout(View* host);
   virtual gfx::Size GetPreferredSize(View* host);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FillLayout);
 };
 
 }  // namespace views
 
-#endif  // VIEWS_FILL_LAYOUT_H_
+#endif  // VIEWS_LAYOUT_FILL_LAYOUT_H_