Plumb activation time to main

ui/android/window_android.cc

Index: ui/android/window_android.cc
diff --git a/ui/android/window_android.cc b/ui/android/window_android.cc
index a2100db6eabf4f29eb8fe66b71d8d3504052649d..07853788fba6ecc3142d2161294f28e3a3e5a0f3 100644
--- a/ui/android/window_android.cc
+++ b/ui/android/window_android.cc
@@ -102,7 +102,7 @@ void WindowAndroid::WindowBeginFrameSource::OnVSync(
   // frame time is in the past, so give the next vsync period as the deadline.
   base::TimeTicks deadline = frame_time + vsync_period;
   last_begin_frame_args_ = cc::BeginFrameArgs::Create(
-      BEGINFRAME_FROM_HERE, source_id(), next_sequence_number_, frame_time,
+      BEGINFRAME_FROM_HERE, source_id(), next_sequence_number_, 0, frame_time,

[Ted C, 2017/04/18 23:11:06]

should this be kDefaultSourceFrameNumber instead of 0?

[panicker, 2017/04/19 17:22:09]

Done.

       deadline, vsync_period, cc::BeginFrameArgs::NORMAL);
   DCHECK(last_begin_frame_args_.IsValid());
   next_sequence_number_++;