Fix a memory leak when calling the one-arg form of ListValue::Remove().

BUG=none
TEST=none
Review URL: http://codereview.chromium.org/434108

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@33314 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/base/values_unittest.cc b/base/values_unittest.cc
index 0182d76..5835e2b 100644
--- a/base/values_unittest.cc
+++ b/base/values_unittest.cc
@@ -224,6 +224,16 @@
     EXPECT_TRUE(deletion_flag);
     EXPECT_EQ(0U, list.GetSize());
   }
+
+  {
+    ListValue list;
+    DeletionTestValue* value = new DeletionTestValue(&deletion_flag);
+    list.Append(value);
+    EXPECT_FALSE(deletion_flag);
+    EXPECT_EQ(0, list.Remove(*value));
+    EXPECT_TRUE(deletion_flag);
+    EXPECT_EQ(0U, list.GetSize());
+  }
 }
 
 TEST(ValuesTest, DictionaryDeletion) {