Always use webkit compositor

ui/gfx/compositor/compositor_setup.h

 // 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 UI_GFX_COMPOSITOR_COMPOSITOR_SETUP_H_
 #define UI_GFX_COMPOSITOR_COMPOSITOR_SETUP_H_
 #pragma once
 
 #include "ui/gfx/compositor/compositor_export.h"
 
 namespace ui {
 
 // Configures the compositor in such a way that it doesn't render anything.
 // Does nothing on platforms that aren't using the compositor.
 #if !defined(VIEWS_COMPOSITOR)
 // To centralize the ifdef to this file we define the function as doing nothing
 // on all platforms that don't use a compositor.
-COMPOSITOR_EXPORT void SetupTestCompositor() {}
+static inline void SetupTestCompositor() {}
+static inline void DisableTestCompositor() {}
 #else
 COMPOSITOR_EXPORT void SetupTestCompositor();
 
 // Disables the test compositor so that the normal compositor is used.
 COMPOSITOR_EXPORT void DisableTestCompositor();
 #endif
 
 }  // namespace ui
 
 #endif  // UI_GFX_COMPOSITOR_COMPOSITOR_SETUP_H_