Fix weak_ptr's operator* implementation.

base/memory/weak_ptr_unittest.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "base/message_loop.h"
 #include "base/synchronization/waitable_event.h"
@@ skipping 317 matching lines @@
   {
     Producer producer;
     Consumer consumer;
     consumer.producer = producer.AsWeakPtr();
     thread.CreateConsumerFromConsumer(&consumer_copy, &consumer);
   }
   EXPECT_TRUE(consumer_copy->producer == NULL);
   thread.DeleteConsumer(consumer_copy);
 }
 
+TEST(WeakPtrTest, Dereference) {
+  Base data;
+  WeakPtrFactory<Base> factory(&data);
+  WeakPtr<Base> ptr = factory.GetWeakPtr();
+  EXPECT_EQ(&data, ptr.get());
+  EXPECT_EQ(&data, *ptr);
+}
+
 }  // namespace base