[turbofan] Remove the JSGraph dependency from the ControlFlowOptimizer.

src/compiler/control-flow-optimizer.h

Index: src/compiler/control-flow-optimizer.h
diff --git a/src/compiler/control-flow-optimizer.h b/src/compiler/control-flow-optimizer.h
index 82f672a2a005298fdc2adb352e219b147abc264b..f72fa58ad78f637df7052a18677795dbad81f577 100644
--- a/src/compiler/control-flow-optimizer.h
+++ b/src/compiler/control-flow-optimizer.h
@@ -15,14 +15,14 @@ namespace compiler {
 // Forward declarations.
 class CommonOperatorBuilder;
 class Graph;
-class JSGraph;
 class MachineOperatorBuilder;
 class Node;
 
 
 class ControlFlowOptimizer final {
  public:
-  ControlFlowOptimizer(JSGraph* jsgraph, Zone* zone);
+  ControlFlowOptimizer(Graph* graph, CommonOperatorBuilder* common,
+                       MachineOperatorBuilder* machine, Zone* zone);
 
   void Optimize();
 
@@ -34,13 +34,14 @@ class ControlFlowOptimizer final {
   bool TryBuildSwitch(Node* node);
   bool TryCloneBranch(Node* node);
 
-  CommonOperatorBuilder* common() const;
-  Graph* graph() const;
-  JSGraph* jsgraph() const { return jsgraph_; }
-  MachineOperatorBuilder* machine() const;
+  Graph* graph() const { return graph_; }
+  CommonOperatorBuilder* common() const { return common_; }
+  MachineOperatorBuilder* machine() const { return machine_; }
   Zone* zone() const { return zone_; }
 
-  JSGraph* const jsgraph_;
+  Graph* const graph_;
+  CommonOperatorBuilder* const common_;
+  MachineOperatorBuilder* const machine_;
   ZoneQueue<Node*> queue_;
   NodeMarker<bool> queued_;
   Zone* const zone_;