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

views/widget/native_widget_wayland.cc

Index: views/widget/native_widget_wayland.cc
===================================================================
--- views/widget/native_widget_wayland.cc	(revision 105158)
+++ views/widget/native_widget_wayland.cc	(working copy)
@@ -94,7 +94,10 @@
       delegate_->AsWidget()->GetRootView()->SetPaintToLayer(true);
   } else {
     surface_ = gfx::GLSurface::CreateViewGLSurface(false, egl_window_);
-    context_ = gfx::GLContext::CreateGLContext(NULL, surface_.get());
+    context_ = gfx::GLContext::CreateGLContext(
+        NULL,
+        surface_.get(),
+        gfx::PreferIntegratedGpu);
 
     if (!context_->MakeCurrent(surface_.get()))
       DLOG(ERROR) << "Failed to make surface current";