Remove gfx::FrameTime for a single clock source

ui/events/gestures/fling_curve_unittest.cc

Index: ui/events/gestures/fling_curve_unittest.cc
diff --git a/ui/events/gestures/fling_curve_unittest.cc b/ui/events/gestures/fling_curve_unittest.cc
index d6dffef9d6c80d7c7c70d5ee844db1ab15bc7b86..540dc633a1d4eac91199b799e84bb7063fd96fbc 100644
--- a/ui/events/gestures/fling_curve_unittest.cc
+++ b/ui/events/gestures/fling_curve_unittest.cc
@@ -5,13 +5,12 @@
 #include "ui/events/gestures/fling_curve.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
-#include "ui/gfx/frame_time.h"
 
 namespace ui {
 
 TEST(FlingCurveTest, Basic) {
   const gfx::Vector2dF velocity(0, 5000);
-  base::TimeTicks now = gfx::FrameTime::Now();
+  base::TimeTicks now = base::TimeTicks::Now();
   FlingCurve curve(velocity, now);
 
   gfx::Vector2dF delta;