gfx: Add FrameTime and DisplayTime classes

cc/trees/layer_tree_host_impl_unittest.cc

Index: cc/trees/layer_tree_host_impl_unittest.cc
diff --git a/cc/trees/layer_tree_host_impl_unittest.cc b/cc/trees/layer_tree_host_impl_unittest.cc
index a35191a7f57db28c04bba5acf25efcc420a8db27..56bdc900c5d340007363e33a5516eb46413edb47 100644
--- a/cc/trees/layer_tree_host_impl_unittest.cc
+++ b/cc/trees/layer_tree_host_impl_unittest.cc
@@ -1149,11 +1149,11 @@ class LayerTreeHostImplOverridePhysicalTime : public LayerTreeHostImpl {
                           rendering_stats_instrumentation,
                           NULL) {}
 
-  virtual base::TimeTicks CurrentPhysicalTimeTicks() const OVERRIDE {
+  virtual base::TimeTicks CurrentPhysicalFrameTime() const OVERRIDE {
     return fake_current_physical_time_;
   }
 
-  void SetCurrentPhysicalTimeTicksForTest(base::TimeTicks fake_now) {
+  void SetCurrentPhysicalFrameTimeForTest(base::TimeTicks fake_now) {
     fake_current_physical_time_ = fake_now;
   }
 
@@ -1208,8 +1208,8 @@ TEST_F(LayerTreeHostImplTest, ScrollbarLinearFadeScheduling) {
   host_impl_->active_tree()->DidBecomeActive();
   InitializeRendererAndDrawFrame();
 
-  base::TimeTicks fake_now = gfx::FrameTime::Now();
-  host_impl_override_time->SetCurrentPhysicalTimeTicksForTest(fake_now);
+  gfx::FrameTime fake_now = gfx::FrameTime::Now();
+  host_impl_override_time->SetCurrentPhysicalFrameTimeForTest(fake_now);
 
   // If no scroll happened recently, StartScrollbarAnimation should have no
   // effect.
@@ -1239,7 +1239,7 @@ TEST_F(LayerTreeHostImplTest, ScrollbarLinearFadeScheduling) {
   // After the fade begins, we should start getting redraws instead of a
   // scheduled animation.
   fake_now += base::TimeDelta::FromMilliseconds(25);
-  host_impl_override_time->SetCurrentPhysicalTimeTicksForTest(fake_now);
+  host_impl_override_time->SetCurrentPhysicalFrameTimeForTest(fake_now);
   host_impl_->StartScrollbarAnimation();
   EXPECT_EQ(base::TimeDelta(), requested_scrollbar_animation_delay_);
   EXPECT_TRUE(did_request_redraw_);
@@ -1248,7 +1248,7 @@ TEST_F(LayerTreeHostImplTest, ScrollbarLinearFadeScheduling) {
   // If no scroll happened recently, StartScrollbarAnimation should have no
   // effect.
   fake_now += base::TimeDelta::FromMilliseconds(25);
-  host_impl_override_time->SetCurrentPhysicalTimeTicksForTest(fake_now);
+  host_impl_override_time->SetCurrentPhysicalFrameTimeForTest(fake_now);
   host_impl_->StartScrollbarAnimation();
   EXPECT_EQ(base::TimeDelta(), requested_scrollbar_animation_delay_);
   EXPECT_FALSE(did_request_redraw_);
@@ -1265,7 +1265,7 @@ TEST_F(LayerTreeHostImplTest, ScrollbarLinearFadeScheduling) {
   // None of the above should have called CurrentFrameTimeTicks, so if we call
   // it now we should get the current time.
   fake_now += base::TimeDelta::FromMilliseconds(10);
-  host_impl_override_time->SetCurrentPhysicalTimeTicksForTest(fake_now);
+  host_impl_override_time->SetCurrentPhysicalFrameTimeForTest(fake_now);
   EXPECT_EQ(fake_now, host_impl_->CurrentFrameTimeTicks());
 }