Make --always-opt also optimize top-level code.

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 45f7451652da34fb40d3d18c6cc49d860ecc832d..4e3a9e310eafe1d2b5260cba835b862f9a002c55 100644
--- a/src/compiler/ast-graph-builder.h
+++ b/src/compiler/ast-graph-builder.h
@@ -245,8 +245,9 @@ class AstGraphBuilder : public AstVisitor {
   // Builder to create a receiver check for sloppy mode.
   Node* BuildPatchReceiverToGlobalProxy(Node* receiver);
 
-  // Builders to create local function and block contexts.
-  Node* BuildLocalFunctionContext(Node* context, Node* closure);
+  // Builders to create local function, script and block contexts.
+  Node* BuildLocalFunctionContext(Node* context);
+  Node* BuildLocalScriptContext(Scope* scope);
   Node* BuildLocalBlockContext(Scope* scope);
 
   // Builder to create an arguments object if it is used.