Support declarations of context allocated locals in Crankshaft.

src/scopes.h

Index: src/scopes.h
===================================================================
--- src/scopes.h	(revision 9109)
+++ src/scopes.h	(working copy)
@@ -125,7 +125,7 @@
   // Declare the function variable for a function literal. This variable
   // is in an intermediate scope between this function scope and the the
   // outer scope. Only possible for function scopes; at most one variable.
-  Variable* DeclareFunctionVar(Handle<String> name);
+  VariableProxy* DeclareFunctionVar(Handle<String> name);
 
   // Declare a parameter in this scope.  When there are duplicated
   // parameters the rightmost one 'wins'.  However, the implementation
@@ -239,7 +239,7 @@
   // The variable holding the function literal for named function
   // literals, or NULL.
   // Only valid for function scopes.
-  Variable* function() const {
+  VariableProxy* function() const {
     ASSERT(is_function_scope());
     return function_;
   }
@@ -358,7 +358,7 @@
   // Convenience variable.
   Variable* receiver_;
   // Function variable, if any; function scopes only.
-  Variable* function_;
+  VariableProxy* function_;
   // Convenience variable; function scopes only.
   Variable* arguments_;