gfx: Add FrameTime and DisplayTime classes

cc/output/begin_frame_args.cc

Index: cc/output/begin_frame_args.cc
diff --git a/cc/output/begin_frame_args.cc b/cc/output/begin_frame_args.cc
index 92901afb1f3d897b37ca374297a8e5bc25463cbc..c7b05e597a20adb95c295319d05138849bbfee0d 100644
--- a/cc/output/begin_frame_args.cc
+++ b/cc/output/begin_frame_args.cc
@@ -8,21 +8,21 @@
 namespace cc {
 
 BeginFrameArgs::BeginFrameArgs()
-  : frame_time(base::TimeTicks()),
-    deadline(base::TimeTicks()),
+  : frame_time(gfx::FrameTime()),
+    deadline(gfx::FrameTime()),
     interval(base::TimeDelta::FromMicroseconds(-1)) {
 }
 
-BeginFrameArgs::BeginFrameArgs(base::TimeTicks frame_time,
-                               base::TimeTicks deadline,
+BeginFrameArgs::BeginFrameArgs(gfx::FrameTime frame_time,
+                               gfx::FrameTime deadline,
                                base::TimeDelta interval)
   : frame_time(frame_time),
     deadline(deadline),
     interval(interval)
 {}
 
-BeginFrameArgs BeginFrameArgs::Create(base::TimeTicks frame_time,
-                                      base::TimeTicks deadline,
+BeginFrameArgs BeginFrameArgs::Create(gfx::FrameTime frame_time,
+                                      gfx::FrameTime deadline,
                                       base::TimeDelta interval) {
   return BeginFrameArgs(frame_time, deadline, interval);
 }
@@ -31,19 +31,19 @@ BeginFrameArgs BeginFrameArgs::CreateForSynchronousCompositor() {
   // For WebView/SynchronousCompositor, we always want to draw immediately,
   // so we set the deadline to 0 and guess that the interval is 16 milliseconds.
   return BeginFrameArgs(gfx::FrameTime::Now(),
-                        base::TimeTicks(),
+                        gfx::FrameTime(),
                         DefaultInterval());
 }
 
 BeginFrameArgs BeginFrameArgs::CreateForTesting() {
-  base::TimeTicks now = gfx::FrameTime::Now();
+  gfx::FrameTime now = gfx::FrameTime::Now();
   return BeginFrameArgs(now,
                         now + (DefaultInterval() / 2),
                         DefaultInterval());
 }
 
 BeginFrameArgs BeginFrameArgs::CreateExpiredForTesting() {
-  base::TimeTicks now = gfx::FrameTime::Now();
+    gfx::FrameTime now = gfx::FrameTime::Now();
   return BeginFrameArgs(now,
                         now - DefaultInterval(),
                         DefaultInterval());