Revert 21774: "Generate KeyedLoadGeneric with Hydrogen"

src/ic.h

Index: src/ic.h
diff --git a/src/ic.h b/src/ic.h
index 3f550438a487849c8931dc6d87f7b51d8b125405..ae8e5c3e228e6c93fe24f1370050eb43c4c24893 100644
--- a/src/ic.h
+++ b/src/ic.h
@@ -525,9 +525,12 @@ class KeyedLoadIC: public LoadIC {
 
   Handle<Code> LoadElementStub(Handle<JSObject> receiver);
 
-  virtual Handle<Code> megamorphic_stub();
-  virtual Handle<Code> generic_stub() const;
-
+  virtual Handle<Code> megamorphic_stub() {
+    return isolate()->builtins()->KeyedLoadIC_Generic();
+  }
+  virtual Handle<Code> generic_stub() const {
+    return isolate()->builtins()->KeyedLoadIC_Generic();
+  }
   virtual Handle<Code> slow_stub() const {
     return isolate()->builtins()->KeyedLoadIC_Slow();
   }