Handle global variables potentially shadowed by eval-introduced...

src/full-codegen.h

Index: src/full-codegen.h
===================================================================
--- src/full-codegen.h	(revision 5429)
+++ src/full-codegen.h	(working copy)
@@ -381,6 +381,9 @@
 #undef EMIT_INLINE_RUNTIME_CALL
 
   // Platform-specific code for loading variables.
+  void EmitLoadGlobalSlotCheckExtensions(Slot* slot,
+                                         TypeofState typeof_state,
+                                         Label* slow);
   void EmitVariableLoad(Variable* expr, Expression::Context context);
 
   // Platform-specific support for allocating a new closure based on
@@ -500,6 +503,9 @@
   // in v8::internal::Context.
   void LoadContextField(Register dst, int context_index);
 
+  // Create an operand for a context field.
+  MemOperand ContextOperand(Register context, int context_index);
+
   // AST node visit functions.
 #define DECLARE_VISIT(type) virtual void Visit##type(type* node);
   AST_NODE_LIST(DECLARE_VISIT)