gfx: Add FrameTime and DisplayTime classes

cc/scheduler/scheduler_state_machine.cc

Index: cc/scheduler/scheduler_state_machine.cc
diff --git a/cc/scheduler/scheduler_state_machine.cc b/cc/scheduler/scheduler_state_machine.cc
index 0fd0f57b3b25b8466f8479c933ac10c89db314a7..8f222e634629d0058030bf38c95e272001a509c5 100644
--- a/cc/scheduler/scheduler_state_machine.cc
+++ b/cc/scheduler/scheduler_state_machine.cc
@@ -194,34 +194,26 @@ scoped_ptr<base::Value> SchedulerStateMachine::AsValue() const  {
   state->Set("major_state", major_state.release());
 
   scoped_ptr<base::DictionaryValue> timestamps_state(new base::DictionaryValue);
-  base::TimeTicks now = gfx::FrameTime::Now();
+  gfx::FrameTime now = gfx::FrameTime::Now();
   timestamps_state->SetDouble(
-      "0_interval",
-      last_begin_impl_frame_args_.interval.InMicroseconds() / 1000.0L);
+      "0_interval", last_begin_impl_frame_args_.interval.InMillisecondsF());
   timestamps_state->SetDouble(
       "1_now_to_deadline",
-      (last_begin_impl_frame_args_.deadline - now).InMicroseconds() / 1000.0L);
+       (last_begin_impl_frame_args_.deadline - now).InMillisecondsF());
   timestamps_state->SetDouble(
       "2_frame_time_to_now",
-      (now - last_begin_impl_frame_args_.frame_time).InMicroseconds() /
-          1000.0L);
+      (now - last_begin_impl_frame_args_.frame_time).InMillisecondsF());
   timestamps_state->SetDouble(
       "3_frame_time_to_deadline",
       (last_begin_impl_frame_args_.deadline -
-              last_begin_impl_frame_args_.frame_time).InMicroseconds() /
-          1000.0L);
-  timestamps_state->SetDouble(
-      "4_now", (now - base::TimeTicks()).InMicroseconds() / 1000.0L);
+       last_begin_impl_frame_args_.frame_time).InMillisecondsF());
+  timestamps_state->SetDouble("4_now", now.Unsafe_InMillisecondsF());
   timestamps_state->SetDouble(
       "5_frame_time",
-      (last_begin_impl_frame_args_.frame_time - base::TimeTicks())
-              .InMicroseconds() /
-          1000.0L);
+      last_begin_impl_frame_args_.frame_time.Unsafe_InMillisecondsF());
   timestamps_state->SetDouble(
       "6_deadline",
-      (last_begin_impl_frame_args_.deadline - base::TimeTicks())
-              .InMicroseconds() /
-          1000.0L);
+      last_begin_impl_frame_args_.deadline.Unsafe_InMillisecondsF());
   state->Set("major_timestamps_in_ms", timestamps_state.release());
 
   scoped_ptr<base::DictionaryValue> minor_state(new base::DictionaryValue);