cc: Use HighResNow as timebase if it is fast and reliable

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 85632497cd58f68327aa983dc17250ec1ce0aad5..41346cc032d83e13dc533222c531de51e03f5fdf 100644
--- a/cc/scheduler/scheduler_state_machine.cc
+++ b/cc/scheduler/scheduler_state_machine.cc
@@ -9,6 +9,7 @@
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "base/values.h"
+#include "ui/gfx/frame_time.h"
 
 namespace cc {
 
@@ -192,7 +193,7 @@ 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 = base::TimeTicks::Now();
+  base::TimeTicks now = gfx::FrameTime::Now();
   timestamps_state->SetDouble(
       "0_interval", last_begin_frame_args_.interval.InMicroseconds() / 1000.0L);
   timestamps_state->SetDouble(