Fix ScopedNSObject tests to deal with selection of ScopedTypeRef::get().

base/mac/scoped_nsobject_unittest.mm

 // Copyright (c) 2012 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 <vector>
 
 #include "base/mac/scoped_nsautorelease_pool.h"
 #include "base/mac/scoped_nsobject.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 14 matching lines @@
   base::scoped_nsobject<NSObject> p2(p1);
   ASSERT_EQ(p1.get(), p2.get());
   ASSERT_EQ(2u, [p1 retainCount]);
   p2.reset();
   ASSERT_EQ(nil, p2.get());
   ASSERT_EQ(1u, [p1 retainCount]);
   {
     base::scoped_nsobject<NSObject> p3 = p1;
     ASSERT_EQ(p1.get(), p3.get());
     ASSERT_EQ(2u, [p1 retainCount]);
-    p3 = p1;
+    {
+      base::mac::ScopedNSAutoreleasePool pool;
+      p3 = p1;
+    }
     ASSERT_EQ(p1.get(), p3.get());
     ASSERT_EQ(2u, [p1 retainCount]);
   }
   ASSERT_EQ(1u, [p1 retainCount]);
   base::scoped_nsobject<NSObject> p4([p1.get() retain]);
   ASSERT_EQ(2u, [p1 retainCount]);
   ASSERT_TRUE(p1 == p1.get());
   ASSERT_TRUE(p1 == p1);
   ASSERT_FALSE(p1 != p1);
   ASSERT_FALSE(p1 != p1.get());
@@ skipping 46 matching lines @@
   base::scoped_nsobject<id> p2([[NSObject alloc] init]);
   ASSERT_TRUE(o1 != p2);
   ASSERT_FALSE(o1 == p2);
   id o2 = p2.get();
   swap(p1, p2);
   ASSERT_EQ(o2, p1.get());
   ASSERT_EQ(o1, p2.get());
 }
 
 }  // namespace