gfx: Add FrameTime and DisplayTime classes

ui/gfx/animation/slide_animation_unittest.cc

Index: ui/gfx/animation/slide_animation_unittest.cc
diff --git a/ui/gfx/animation/slide_animation_unittest.cc b/ui/gfx/animation/slide_animation_unittest.cc
index 9d4f5343db13be85c46bc71daa6653b62da00014..dd8829baa838a5f0d48120efa470c9d91b22e7d9 100644
--- a/ui/gfx/animation/slide_animation_unittest.cc
+++ b/ui/gfx/animation/slide_animation_unittest.cc
@@ -16,11 +16,11 @@ class SlideAnimation::TestApi {
  public:
   explicit TestApi(SlideAnimation* animation) : animation_(animation) {}
 
-  void SetStartTime(base::TimeTicks ticks) {
+  void SetStartTime(gfx::FrameTime ticks) {
     animation_->SetStartTime(ticks);
   }
 
-  void Step(base::TimeTicks ticks) {
+  void Step(gfx::FrameTime ticks) {
     animation_->Step(ticks);
   }
 
@@ -69,8 +69,8 @@ TEST_F(SlideAnimationTest, Basics) {
   EXPECT_FALSE(animation.IsClosing());
 
   // Simulate running the animation.
-  test_api.SetStartTime(base::TimeTicks());
-  test_api.Step(base::TimeTicks() + base::TimeDelta::FromMilliseconds(50));
+  test_api.SetStartTime(gfx::FrameTime());
+  test_api.Step(gfx::FrameTime() + base::TimeDelta::FromMilliseconds(50));
   EXPECT_EQ(0.5, animation.GetCurrentValue());
 
   // We can start hiding mid-way through the animation.