gfx: Add FrameTime and DisplayTime classes

ui/compositor/layer_animation_sequence.h

 // 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.
 
 #ifndef UI_COMPOSITOR_LAYER_ANIMATION_SEQUENCE_H_
 #define UI_COMPOSITOR_LAYER_ANIMATION_SEQUENCE_H_
 
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/memory/linked_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/time/time.h"
 #include "ui/compositor/compositor_export.h"
 #include "ui/compositor/layer_animation_element.h"
+#include "ui/gfx/frame_time.h"
 
 namespace ui {
 
 class LayerAnimationDelegate;
 class LayerAnimationObserver;
 
 // Contains a collection of layer animation elements to be played one after
 // another. Although it has a similar interface to LayerAnimationElement, it is
 // not a LayerAnimationElement (i.e., it is not permitted to have a sequence in
 // a sequence). Sequences own their elements, and sequences are themselves owned
@@ skipping 10 matching lines @@
     : public base::SupportsWeakPtr<LayerAnimationSequence> {
  public:
   LayerAnimationSequence();
   // Takes ownership of the given element and adds it to the sequence.
   explicit LayerAnimationSequence(LayerAnimationElement* element);
   virtual ~LayerAnimationSequence();
 
   // Sets the start time for the animation. This must be called before the
   // first call to {Start, IsFinished}. Once the animation is finished, this
   // must be called again in order to restart the animation.
-  void set_start_time(base::TimeTicks start_time) { start_time_ = start_time; }
-  base::TimeTicks start_time() const { return start_time_; }
+  void set_start_time(gfx::FrameTime start_time) { start_time_ = start_time; }
+  gfx::FrameTime start_time() const { return start_time_; }
 
   // Sets a flag indicating that this sequence will start together with other
   // sequences, and at least one of the sequences in this group has a threaded
   // first element.
   void set_waiting_for_group_start(bool waiting) {
     waiting_for_group_start_ = waiting;
   }
   bool waiting_for_group_start() { return waiting_for_group_start_; }
 
   // This must be called before the first call to Progress. If starting the
   // animation involves dispatching to another thread, then this will proceed
   // with that dispatch, ultimately resulting in the animation getting an
   // effective start time (the time the animation starts on the other thread).
   void Start(LayerAnimationDelegate* delegate);
 
   // Updates the delegate to the appropriate value for |now|. Requests a
   // redraw if it is required.
-  void Progress(base::TimeTicks now, LayerAnimationDelegate* delegate);
+  void Progress(gfx::FrameTime now, LayerAnimationDelegate* delegate);
 
   // Returns true if calling Progress now, with the given time, will finish
   // the animation.
-  bool IsFinished(base::TimeTicks time);
+  bool IsFinished(gfx::FrameTime time);
 
   // Updates the delegate to the end of the animation; if this sequence is
   // cyclic, updates the delegate to the end of one cycle of the sequence.
   void ProgressToEnd(LayerAnimationDelegate* delegate);
 
   // Sets the target value to the value that would have been set had
   // the sequence completed. Does nothing if the sequence is cyclic.
   void GetTargetValue(LayerAnimationElement::TargetValue* target) const;
 
   // Aborts the given animation.
@@ skipping 72 matching lines @@
   LayerAnimationElement::AnimatableProperties properties_;
 
   // The elements in the sequence.
   Elements elements_;
 
   // True if the sequence should be looped forever.
   bool is_cyclic_;
 
   // These are used when animating to efficiently find the next element.
   size_t last_element_;
-  base::TimeTicks last_start_;
+  gfx::FrameTime last_start_;
 
   // The start time of the current run of the sequence.
-  base::TimeTicks start_time_;
+  gfx::FrameTime start_time_;
 
   // True if this sequence will start together with other sequences, and at
   // least one of the sequences in this group has a threaded first element.
   bool waiting_for_group_start_;
 
   // Identifies groups of sequences that are supposed to start together.
   // Also used to identify the owner of a particular threaded animation; any
   // in-progress threaded animation owned by this sequence will have this
   // group id.
   int animation_group_id_;
 
   // These parties are notified when layer animations end.
   ObserverList<LayerAnimationObserver> observers_;
 
   // Tracks the last_progressed_fraction() of the most recently progressed
   // element.
   double last_progressed_fraction_;
 
   base::WeakPtrFactory<LayerAnimationSequence> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerAnimationSequence);
 };
 
 }  // namespace ui
 
 #endif  // UI_COMPOSITOR_LAYER_ANIMATION_SEQUENCE_H_