ui: Move gl/ directory out of gfx/, up to ui/.

ui/gfx/gl/gl_switches.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.
-
-// Defines all the command-line switches used by ui/gfx/gl.
-
-#ifndef UI_GFX_GL_GL_SWITCHES_H_
-#define UI_GFX_GL_GL_SWITCHES_H_
-#pragma once
-
-#include "ui/gfx/gl/gl_export.h"
-
-namespace gfx {
-
-// The GL implementation names that can be passed to --use-gl.
-GL_EXPORT extern const char kGLImplementationDesktopName[];
-GL_EXPORT extern const char kGLImplementationOSMesaName[];
-GL_EXPORT extern const char kGLImplementationAppleName[];
-GL_EXPORT extern const char kGLImplementationEGLName[];
-GL_EXPORT extern const char kGLImplementationSwiftShaderName[];
-extern const char kGLImplementationMockName[];
-
-}  // namespace gfx
-
-namespace switches {
-
-GL_EXPORT extern const char kDisableGpuSwitching[];
-GL_EXPORT extern const char kDisableGpuVsync[];
-GL_EXPORT extern const char kEnableGPUServiceLogging[];
-GL_EXPORT extern const char kEnableGPUClientLogging[];
-GL_EXPORT extern const char kGpuNoContextLost[];
-GL_EXPORT extern const char kGpuSwapDelay[];
-GL_EXPORT extern const char kUseGL[];
-GL_EXPORT extern const char kSwiftShaderPath[];
-GL_EXPORT extern const char kTestGLLib[];
-
-}  // namespace switches
-
-#endif  // UI_GFX_GL_GL_SWITCHES_H_