Support dynamic switching between integrated and discrete GPUs on Mac OS X.

gpu/gles2_conform_support/egl/display.cc

 // 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.
 
 #include "gpu/gles2_conform_support/egl/display.h"
 
 #include <vector>
 #include "gpu/command_buffer/client/gles2_lib.h"
 #include "gpu/command_buffer/service/context_group.h"
 #include "gpu/gles2_conform_support/egl/config.h"
@@ skipping 99 matching lines @@
   gpu_scheduler_.reset(new gpu::GpuScheduler(command_buffer_.get(),
                                              decoder_.get(),
                                              NULL));
 
   decoder_->set_engine(gpu_scheduler_.get());
 
   gl_surface_ = gfx::GLSurface::CreateViewGLSurface(false, win);
   if (!gl_surface_.get())
     return EGL_NO_SURFACE;
 
-  gl_context_ = gfx::GLContext::CreateGLContext(NULL, gl_surface_.get());
+  gl_context_ = gfx::GLContext::CreateGLContext(NULL,
+                                                gl_surface_.get(),
+                                                gfx::PreferDiscreteGpu);
   if (!gl_context_.get())
     return EGL_NO_SURFACE;
 
   std::vector<int32> attribs;
   if (!decoder_->Initialize(gl_surface_.get(),
                             gl_context_.get(),
                             gfx::Size(),
                             gpu::gles2::DisallowedFeatures(),
                             NULL,
                             attribs)) {
@@ skipping 64 matching lines @@
   } else {
     DCHECK(IsValidSurface(draw));
     DCHECK(IsValidSurface(read));
     DCHECK(IsValidContext(ctx));
     gles2::SetGLContext(context_.get());
   }
   return true;
 }
 
 }  // namespace egl