Removed un-used commandline switches.

ui/gl/gl_switches.cc

 // 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.
 
 #include "ui/gl/gl_switches.h"
 #include "base/basictypes.h"
 
 namespace gfx {
 
 const char kGLImplementationDesktopName[]     = "desktop";
@@ skipping 31 matching lines @@
 const char kSwiftShaderPath[]               = "swiftshader-path";
 
 // Inform Chrome that a GPU context will not be lost in power saving mode,
 // screen saving mode, etc.  Note that this flag does not ensure that a GPU
 // context will never be lost in any situations, say, a GPU reset.
 const char kGpuNoContextLost[]              = "gpu-no-context-lost";
 
 // Indicates whether the dual GPU switching is supported or not.
 const char kSupportsDualGpus[]              = "supports-dual-gpus";
 
-// Overwrite the default GPU automatic switching behavior to force on
-// integrated GPU or discrete GPU.
-const char kGpuSwitching[]                  = "gpu-switching";
-
-const char kGpuSwitchingOptionNameForceIntegrated[] = "force_integrated";
-const char kGpuSwitchingOptionNameForceDiscrete[]   = "force_discrete";
-
 // Flag used for Linux tests: for desktop GL bindings, try to load this GL
 // library first, but fall back to regular library if loading fails.
 const char kTestGLLib[]                     = "test-gl-lib";
 
 // Use hardware gpu, if available, for tests.
 const char kUseGpuInTests[] = "use-gpu-in-tests";
 
 // Disables GL drawing operations which produce pixel output. With this
 // the GL output will not be correct but tests will run faster.
 const char kDisableGLDrawingForTests[] = "disable-gl-drawing-for-tests";
@@ skipping 12 matching lines @@
   kEnableGPUServiceTracing,
   kGpuNoContextLost,
   kDisableGLDrawingForTests,
   kOverrideUseGLWithOSMesaForTests,
 };
 const int kGLSwitchesCopiedFromGpuProcessHostNumSwitches =
     arraysize(kGLSwitchesCopiedFromGpuProcessHost);
 
 }  // namespace switches