Fix weak_ptr's operator* implementation.

base/memory/weak_ptr_unittest.cc

Index: base/memory/weak_ptr_unittest.cc
diff --git a/base/memory/weak_ptr_unittest.cc b/base/memory/weak_ptr_unittest.cc
index 4b73d1791646b176254147dc4c8ac3aceb479255..f97f08aee9783e1d55d5f18e48a8593e86323a37 100644
--- a/base/memory/weak_ptr_unittest.cc
+++ b/base/memory/weak_ptr_unittest.cc
@@ -335,4 +335,12 @@ TEST(WeakPtrTest, OwnerThreadDeletesObject) {
   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