Rewrite scoped_ptr<T>(NULL) to use the default ctor in chrome/.

chrome/browser/value_store/value_store_frontend_unittest.cc

Index: chrome/browser/value_store/value_store_frontend_unittest.cc
diff --git a/chrome/browser/value_store/value_store_frontend_unittest.cc b/chrome/browser/value_store/value_store_frontend_unittest.cc
index cc3ca1fcb600e816cd571dd5da983f981d7aeadc..62295c791aa4f4600343324588418f7a09f674f9 100644
--- a/chrome/browser/value_store/value_store_frontend_unittest.cc
+++ b/chrome/browser/value_store/value_store_frontend_unittest.cc
@@ -68,7 +68,7 @@ class ValueStoreFrontendTest : public testing::Test {
 };
 
 TEST_F(ValueStoreFrontendTest, GetExistingData) {
-  scoped_ptr<base::Value> value(NULL);
+  scoped_ptr<base::Value> value;
   ASSERT_FALSE(Get("key0", &value));
 
   // Test existing keys in the DB.
@@ -97,7 +97,7 @@ TEST_F(ValueStoreFrontendTest, ChangesPersistAfterReload) {
   // Reload the DB and test our changes.
   ResetStorage();
 
-  scoped_ptr<base::Value> value(NULL);
+  scoped_ptr<base::Value> value;
   {
     ASSERT_TRUE(Get("key0", &value));
     int result;