C++11 declares a type safe null pointer

content/common/shareable_file_reference_unittest.cc

Index: content/common/shareable_file_reference_unittest.cc
diff --git a/content/common/shareable_file_reference_unittest.cc b/content/common/shareable_file_reference_unittest.cc
index 5e697b9eb24e431024dc57d0e1ff50fc89e290cb..e6c9de8fc4c37ddcd96d1d19ed8a748ccb261e5c 100644
--- a/content/common/shareable_file_reference_unittest.cc
+++ b/content/common/shareable_file_reference_unittest.cc
@@ -44,13 +44,13 @@ TEST(ShareableFileReferenceTest, TestReferences) {
   EXPECT_EQ(reference1.get(), reference2.get());
 
   // Drop the first reference, the file and reference should still be there.
-  reference1 = NULL;
+  reference1 = nullptr;
   EXPECT_TRUE(ShareableFileReference::Get(file).get());
   base::RunLoop().RunUntilIdle();
   EXPECT_TRUE(base::PathExists(file));
 
   // Drop the second reference, the file and reference should get deleted.
-  reference2 = NULL;
+  reference2 = nullptr;
   EXPECT_FALSE(ShareableFileReference::Get(file).get());
   base::RunLoop().RunUntilIdle();
   EXPECT_FALSE(base::PathExists(file));