Change deprecated semantics of function template signatures.

src/stub-cache.h

Index: src/stub-cache.h
diff --git a/src/stub-cache.h b/src/stub-cache.h
index f858e4722a2ded4868877034f3494977d66cccde..98d218bb52aad3948eb417ac25a618b1235394e5 100644
--- a/src/stub-cache.h
+++ b/src/stub-cache.h
@@ -919,10 +919,11 @@ class CallOptimization BASE_EMBEDDED {
     return api_call_info_;
   }
 
-  // Returns the depth of the object having the expected type in the
-  // prototype chain between the two arguments.
-  int GetPrototypeDepthOfExpectedType(Handle<JSObject> object,
-                                      Handle<JSObject> holder) const;
+  bool IsCompatibleReceiver(Handle<Object> receiver) const {
+    ASSERT(is_simple_api_call());
+    return expected_receiver_type_.is_null() ||
+        receiver->IsInstanceOf(*expected_receiver_type_);
+  }
 
  private:
   void Initialize(Handle<JSFunction> function);