Deprecate the version of MakeWeak which takes an Isolate.

test/cctest/test-heap-profiler.cc

Index: test/cctest/test-heap-profiler.cc
diff --git a/test/cctest/test-heap-profiler.cc b/test/cctest/test-heap-profiler.cc
index 254cd1e490bbe28e5eac66bf0358edb23eb7d4c3..33b0fb9299b4117f1b0a091d739129f2303ebc17 100644
--- a/test/cctest/test-heap-profiler.cc
+++ b/test/cctest/test-heap-profiler.cc
@@ -1605,9 +1605,7 @@ TEST(WeakGlobalHandle) {
   CHECK(!HasWeakGlobalHandle());
 
   v8::Persistent<v8::Object> handle(env->GetIsolate(), v8::Object::New());
-  handle.MakeWeak<v8::Value, void>(env->GetIsolate(),
-                                   NULL,
-                                   PersistentHandleCallback);
+  handle.MakeWeak<v8::Value, void>(NULL, PersistentHandleCallback);
 
   CHECK(HasWeakGlobalHandle());
 }