Sync ui/events to chromium @ https://codereview.chromium.org/1210203002

ui/gfx/screen_stub.cc

Index: ui/gfx/screen_stub.cc
diff --git a/ui/gl/gl_state_restorer.cc b/ui/gfx/screen_stub.cc
similarity index 55%
copy from ui/gl/gl_state_restorer.cc
copy to ui/gfx/screen_stub.cc
index 8bf6f81ec68ff6986b7f6a98bdef15b142363079..7a1effa0e8cef6d6c2446727089443ea77689768 100644
--- a/ui/gl/gl_state_restorer.cc
+++ b/ui/gfx/screen_stub.cc
@@ -2,15 +2,15 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "ui/gl/gl_state_restorer.h"
+#include "ui/gfx/screen.h"
 
-namespace gfx {
+#include "base/logging.h"
 
-GLStateRestorer::GLStateRestorer() {
-}
+namespace gfx {
 
-GLStateRestorer::~GLStateRestorer() {
+Screen* CreateNativeScreen() {
+  NOTREACHED() << "Implementation should be installed at higher level.";
+  return NULL;
 }
 
 }  // namespace gfx
-