Cleanup: Update the path to gfx size headers.

ui/gl/gl_image_glx.h

 // Copyright (c) 2012 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 UI_GL_GL_IMAGE_GLX_H_
 #define UI_GL_GL_IMAGE_GLX_H_
 
-#include "ui/gfx/size.h"
+#include "ui/gfx/geometry/size.h"
 #include "ui/gfx/x/x11_types.h"
 #include "ui/gl/gl_export.h"
 #include "ui/gl/gl_image.h"
 
 namespace gfx {
 
 class GL_EXPORT GLImageGLX : public GLImage {
  public:
   GLImageGLX(const gfx::Size& size, unsigned internalformat);
 
@@ skipping 22 matching lines @@
   XID glx_pixmap_;
   const gfx::Size size_;
   unsigned internalformat_;
 
   DISALLOW_COPY_AND_ASSIGN(GLImageGLX);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GL_GL_IMAGE_GLX_H_