Remove gfx::FrameTime for a single clock source

ui/gl/gl_surface_win.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_surface.h"
 
 #include <dwmapi.h>
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/trace_event/trace_event.h"
 #include "base/win/windows_version.h"
-#include "ui/gfx/frame_time.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_implementation.h"
 #include "ui/gl/gl_surface_egl.h"
 #include "ui/gl/gl_surface_osmesa.h"
 #include "ui/gl/gl_surface_stub.h"
 #include "ui/gl/gl_surface_wgl.h"
 
 // From ANGLE's egl/eglext.h.
 #if !defined(EGL_D3D11_ELSE_D3D9_DISPLAY_ANGLE)
@@ skipping 57 matching lines @@
         base::TimeDelta rate_interval;
         if (timing_info.rateRefresh.uiDenominator > 0 &&
             timing_info.rateRefresh.uiNumerator > 0) {
           // Swap the numerator/denominator to convert frequency to period.
           rate_interval = base::TimeDelta::FromMicroseconds(
               timing_info.rateRefresh.uiDenominator *
               base::Time::kMicrosecondsPerSecond /
               timing_info.rateRefresh.uiNumerator);
         }
 
-        if (gfx::FrameTime::TimestampsAreHighRes()) {
+        if (base::TimeTicks::IsHighResolution()) {
           // qpcRefreshPeriod is very accurate but noisy, and must be used with
           // a high resolution timebase to avoid frequently missing Vsync.
-          timebase = gfx::FrameTime::FromQPCValue(
+          timebase = base::TimeTicks::FromQPCValue(
               static_cast<LONGLONG>(timing_info.qpcVBlank));
           interval = base::TimeDelta::FromQPCValue(
               static_cast<LONGLONG>(timing_info.qpcRefreshPeriod));
           // Check for interval values that are impossibly low. A 29 microsecond
           // interval was seen (from a qpcRefreshPeriod of 60).
           if (interval < base::TimeDelta::FromMilliseconds(1)) {
             interval = rate_interval;
           }
           // Check for the qpcRefreshPeriod interval being improbably small
           // compared to the rateRefresh calculated interval, as another
@@ skipping 251 matching lines @@
       NOTREACHED();
       return NULL;
   }
 }
 
 EGLNativeDisplayType GetPlatformDefaultEGLNativeDisplay() {
   return GetDC(NULL);
 }
 
 }  // namespace gfx