cc: Add queue of BeginFrames to support long deadlines.

cc/scheduler/frame_rate_controller.cc

Index: cc/scheduler/frame_rate_controller.cc
diff --git a/cc/scheduler/frame_rate_controller.cc b/cc/scheduler/frame_rate_controller.cc
index 91e48e6f1e76263276fe2bcad4258ad3dabf4708..08aa31a510dcdc65a4a14bf7d790fa8c89411d95 100644
--- a/cc/scheduler/frame_rate_controller.cc
+++ b/cc/scheduler/frame_rate_controller.cc
@@ -75,7 +75,7 @@ BeginFrameArgs FrameRateController::SetActive(bool active) {
   if (is_time_source_throttling_) {
     base::TimeTicks missed_tick_time = time_source_->SetActive(active);
     if (!missed_tick_time.is_null()) {
-      base::TimeTicks deadline = NextTickTime();
+      base::TimeTicks deadline = NextTickTime() + interval_;
       BeginFrameArgs args =
           BeginFrameArgs::Create(missed_tick_time, deadline, interval_);
       args.AdjustDeadline(deadline_adjustment_);
@@ -120,7 +120,7 @@ void FrameRateController::OnTimerTick() {
   if (client_) {
     // TODO(brianderson): Use an adaptive parent compositor deadline.
     base::TimeTicks frame_time = LastTickTime();
-    base::TimeTicks deadline = NextTickTime();
+    base::TimeTicks deadline = NextTickTime() + interval_;
     BeginFrameArgs args =
         BeginFrameArgs::Create(frame_time, deadline, interval_);
     args.AdjustDeadline(deadline_adjustment_);