Convert CC scheduler logic to use base::TimeTicks/Delta instead of doubles

cc/CCFrameRateController.cpp

Index: cc/CCFrameRateController.cpp
diff --git a/cc/CCFrameRateController.cpp b/cc/CCFrameRateController.cpp
index 25d4d7e4cd45d2e53e8fb3203f90720c437ca705..d143a850cd27cbe486007a86513844644f425aa6 100644
--- a/cc/CCFrameRateController.cpp
+++ b/cc/CCFrameRateController.cpp
@@ -90,10 +90,10 @@ void CCFrameRateController::setMaxFramesPending(int maxFramesPending)
     m_maxFramesPending = maxFramesPending;
 }
 
-void CCFrameRateController::setTimebaseAndInterval(double timebase, double intervalSeconds)
+void CCFrameRateController::setTimebaseAndInterval(base::TimeTicks timebase, base::TimeDelta interval)
 {
     if (m_isTimeSourceThrottling)
-        m_timeSource->setTimebaseAndInterval(timebase, intervalSeconds);
+        m_timeSource->setTimebaseAndInterval(timebase, interval);
 }
 
 void CCFrameRateController::setSwapBuffersCompleteSupported(bool supported)
@@ -151,12 +151,12 @@ void CCFrameRateController::didAbortAllPendingFrames()
     m_numFramesPending = 0;
 }
 
-double CCFrameRateController::nextTickTimeIfActivated()
+base::TimeTicks CCFrameRateController::nextTickTimeIfActivated()
 {
     if (m_isTimeSourceThrottling)
         return m_timeSource->nextTickTimeIfActivated();
 
-    return monotonicallyIncreasingTime();
+    return base::TimeTicks::Now();
 }
 
 }