Remove gfx::FrameTime for a single clock source

cc/input/top_controls_manager.cc

 // Copyright 2013 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 "cc/input/top_controls_manager.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "cc/animation/keyframed_animation_curve.h"
 #include "cc/animation/timing_function.h"
 #include "cc/input/top_controls_manager_client.h"
 #include "cc/output/begin_frame_args.h"
 #include "cc/trees/layer_tree_impl.h"
-#include "ui/gfx/frame_time.h"
+
 #include "ui/gfx/geometry/vector2d_f.h"
 #include "ui/gfx/transform.h"
 
 namespace cc {
 namespace {
 // These constants were chosen empirically for their visually pleasant behavior.
 // Contact tedchoc@chromium.org for questions about changing these values.
 const int64 kShowHideMaxDurationMs = 200;
 }
 
@@ skipping 157 matching lines @@
   if (top_controls_animation_ && animation_direction_ == direction)
     return;
 
   if (!TopControlsHeight()) {
     client_->SetCurrentTopControlsShownRatio(
         direction == HIDING_CONTROLS ? 0.f : 1.f);
     return;
   }
 
   top_controls_animation_ = KeyframedFloatAnimationCurve::Create();
-  base::TimeDelta start_time = gfx::FrameTime::Now() - base::TimeTicks();
+  base::TimeDelta start_time = base::TimeTicks::Now() - base::TimeTicks();
   top_controls_animation_->AddKeyframe(
       FloatKeyframe::Create(start_time, TopControlsShownRatio(), nullptr));
   float max_ending_ratio = (direction == SHOWING_CONTROLS ? 1 : -1);
   top_controls_animation_->AddKeyframe(FloatKeyframe::Create(
       start_time + base::TimeDelta::FromMilliseconds(kShowHideMaxDurationMs),
       TopControlsShownRatio() + max_ending_ratio,
       EaseTimingFunction::Create()));
   animation_direction_ = direction;
   client_->DidChangeTopControlsPosition();
 }
@@ skipping 30 matching lines @@
   }
   return false;
 }
 
 void TopControlsManager::ResetBaseline() {
   accumulated_scroll_delta_ = 0.f;
   baseline_content_offset_ = ContentTopOffset();
 }
 
 }  // namespace cc