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

base/mac/scoped_nsobject_unittest_arc.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>
 
 #import <CoreFoundation/CoreFoundation.h>
 
 #include "base/logging.h"
 #import "base/mac/scoped_nsobject.h"
@@ skipping 45 matching lines @@
   EXPECT_EQ(2, GetRetainCount(p1));
   p2.reset();
   EXPECT_EQ(nil, p2.get());
   EXPECT_EQ(1, GetRetainCount(p1));
   {
     base::scoped_nsobject<NSObject> p3 = p1;
     @autoreleasepool {
       EXPECT_EQ(p1.get(), p3.get());
     }
     EXPECT_EQ(2, GetRetainCount(p1));
-    p3 = p1;
     @autoreleasepool {
+      p3 = p1;
       EXPECT_EQ(p1.get(), p3.get());
     }
     EXPECT_EQ(2, GetRetainCount(p1));
   }
   EXPECT_EQ(1, GetRetainCount(p1));
   base::scoped_nsobject<NSObject> p4;
   @autoreleasepool {
     p4 = base::scoped_nsobject<NSObject>(p1.get());
   }
   EXPECT_EQ(2, GetRetainCount(p1));
@@ skipping 50 matching lines @@
   base::scoped_nsobject<id> p2([[NSObject alloc] init]);
   EXPECT_TRUE(o1 != p2);
   EXPECT_FALSE(o1 == p2);
   id o2 = p2.get();
   swap(p1, p2);
   EXPECT_EQ(o2, p1.get());
   EXPECT_EQ(o1, p2.get());
 }
 
 }  // namespace