Revert of Revert of [strong] Implement strong mode restrictions on property access

src/ic/handler-compiler.h

Index: src/ic/handler-compiler.h
diff --git a/src/ic/handler-compiler.h b/src/ic/handler-compiler.h
index 077db923076e76a7095cdf16744469354ccece3b..66fdf562c6332b3db5ded81839480e04b41d0ca9 100644
--- a/src/ic/handler-compiler.h
+++ b/src/ic/handler-compiler.h
@@ -146,6 +146,8 @@
   static Handle<Code> ComputeLoadNonexistent(Handle<Name> name,
                                              Handle<Map> map);
 
+  static void GenerateSlow(MacroAssembler* masm);
+
   static void GenerateLoadViaGetter(MacroAssembler* masm, Handle<Map> map,
                                     Register receiver, Register holder,
                                     int accessor_index, int expected_arguments,
@@ -290,8 +292,10 @@
   virtual ~ElementHandlerCompiler() {}
 
   void CompileElementHandlers(MapHandleList* receiver_maps,
-                              CodeHandleList* handlers);
-
+                              CodeHandleList* handlers,
+                              LanguageMode language_mode);
+
+  static void GenerateLoadSlow(MacroAssembler* masm);
   static void GenerateStoreSlow(MacroAssembler* masm);
 };
 }