Fix scoped_nsobject move constructor.

base/mac/scoped_nsobject_unittest.mm

Index: base/mac/scoped_nsobject_unittest.mm
diff --git a/base/mac/scoped_nsobject_unittest.mm b/base/mac/scoped_nsobject_unittest.mm
index 5694e6862f607c32c3918315ad93953df437aa42..457962d94189b40bb4345aa66dfc82580ed6c789 100644
--- a/base/mac/scoped_nsobject_unittest.mm
+++ b/base/mac/scoped_nsobject_unittest.mm
@@ -61,6 +61,12 @@ TEST(ScopedNSObjectTest, ScopedNSObject) {
     ASSERT_EQ(3u, [p1 retainCount]);
   }
   ASSERT_EQ(2u, [p1 retainCount]);
+
+  base::scoped_nsobject<NSObject> p7([NSObject new]);
+  base::scoped_nsobject<NSObject> p8(std::move(p7));
+  ASSERT_TRUE(p8);
+  ASSERT_EQ(1u, [p8 retainCount]);
+  ASSERT_FALSE(p7.get());
 }
 
 // Instantiating scoped_nsobject<> with T=NSAutoreleasePool should trip a