cc: SwapAck throttle Swap without throttling MainFrames

cc/scheduler/scheduler_state_machine.cc

Index: cc/scheduler/scheduler_state_machine.cc
diff --git a/cc/scheduler/scheduler_state_machine.cc b/cc/scheduler/scheduler_state_machine.cc
index 02448897daf82ec3fa5ddde25622eeaeb2217d6d..7cf4bb60a3646c706ad57d67acc0c255f27b17e0 100644
--- a/cc/scheduler/scheduler_state_machine.cc
+++ b/cc/scheduler/scheduler_state_machine.cc
@@ -480,11 +480,6 @@ bool SchedulerStateMachine::ShouldSendBeginMainFrame() const {
   if (!HasInitializedOutputSurface())
     return false;
 
-  // SwapAck throttle the BeginMainFrames
-  // TODO(brianderson): Remove this restriction to improve throughput.
-  if (pending_swaps_ >= max_pending_swaps_)
-    return false;
-
   if (skip_begin_main_frame_to_reduce_latency_)
     return false;