[turbofan] Move context specialization into JSContextSpecializer.

src/compiler/ast-graph-builder.h

Index: src/compiler/ast-graph-builder.h
diff --git a/src/compiler/ast-graph-builder.h b/src/compiler/ast-graph-builder.h
index 770d2d94345f41972f30df9095fbee428191f142..478514bd4b84a8216fc71cd2df2cb18fbcbf8370 100644
--- a/src/compiler/ast-graph-builder.h
+++ b/src/compiler/ast-graph-builder.h
@@ -35,7 +35,7 @@ class AstGraphBuilder : public AstVisitor {
                   JSTypeFeedbackTable* js_type_feedback = NULL);
 
   // Creates a graph by visiting the entire AST.
-  bool CreateGraph(bool constant_context, bool stack_check = true);
+  bool CreateGraph(bool stack_check = true);
 
   // Helpers to create new control nodes.
   Node* NewIfTrue() { return NewNode(common()->IfTrue()); }
@@ -150,13 +150,13 @@ class AstGraphBuilder : public AstVisitor {
   // Create the main graph body by visiting the AST.
   void CreateGraphBody(bool stack_check);
 
-  // Create the node that represents the outer context of the function.
-  void CreateFunctionContext(bool constant_context);
-
   // Get or create the node that represents the outer function closure.
   Node* GetFunctionClosureForContext();
   Node* GetFunctionClosure();
 
+  // Get or create the node that represents the outer context of the function.
+  Node* GetFunctionContext();
+
   // Node creation helpers.
   Node* NewNode(const Operator* op, bool incomplete = false) {
     return MakeNode(op, 0, static_cast<Node**>(NULL), incomplete);
@@ -202,9 +202,6 @@ class AstGraphBuilder : public AstVisitor {
   Node* NewPhi(int count, Node* input, Node* control);
   Node* NewEffectPhi(int count, Node* input, Node* control);
 
-  Node* NewOuterContextParam();
-  Node* NewCurrentContextOsrValue();
-
   // Helpers for merging control, effect or value dependencies.
   Node* MergeControl(Node* control, Node* other);
   Node* MergeEffect(Node* value, Node* other, Node* control);