Move code in ui/gl/* from gfx:: to gl::

ui/gl/vsync_provider_win.cc

 // Copyright 2015 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/vsync_provider_win.h"
 
 #include <dwmapi.h>
 
 #include "base/logging.h"
 #include "base/trace_event/trace_event.h"
 #include "base/win/windows_version.h"
 #include "ui/gfx/native_widget_types.h"
 
-namespace gfx {
+namespace gl {
 
 namespace {
 bool g_use_dwm_vsync;
 }  // namespace
 
 VSyncProviderWin::VSyncProviderWin(gfx::AcceleratedWidget window)
     : window_(window) {
 }
 
 VSyncProviderWin::~VSyncProviderWin() {}
@@ skipping 93 matching lines @@
             base::Time::kMicrosecondsPerSecond);
       }
     }
   }
 
   if (interval.ToInternalValue() != 0) {
     callback.Run(timebase, interval);
   }
 }
 
-}  // namespace gfx
+}  // namespace gl