Cleanup unscheduled use count for controls of coupled nodes.

src/compiler/scheduler.h

Index: src/compiler/scheduler.h
diff --git a/src/compiler/scheduler.h b/src/compiler/scheduler.h
index 25e93f96cbd35d18fb760028b11908f15eb202c7..b73d1bb19cfbf29a5ffa7197262175f07ba06faa 100644
--- a/src/compiler/scheduler.h
+++ b/src/compiler/scheduler.h
@@ -69,8 +69,9 @@ class Scheduler {
   Placement GetPlacement(Node* node);
   void UpdatePlacement(Node* node, Placement placement);
 
-  void IncrementUnscheduledUseCount(Node* node, Node* from);
-  void DecrementUnscheduledUseCount(Node* node, Node* from);
+  inline bool IsCoupledControlEdge(Node* node, int index);
+  void IncrementUnscheduledUseCount(Node* node, int index, Node* from);
+  void DecrementUnscheduledUseCount(Node* node, int index, Node* from);
 
   inline int GetRPONumber(BasicBlock* block);
   BasicBlock* GetCommonDominator(BasicBlock* b1, BasicBlock* b2);