Removes MessageLoop::TYPE_XXX where possible

chrome/browser/policy/url_blacklist_manager_unittest.cc

Index: chrome/browser/policy/url_blacklist_manager_unittest.cc
diff --git a/chrome/browser/policy/url_blacklist_manager_unittest.cc b/chrome/browser/policy/url_blacklist_manager_unittest.cc
index 4329cbdaf2750b2dfd4240b1a4a7545910c90eb2..cc665286a3544cd90f59c8623ef01962077c2b59 100644
--- a/chrome/browser/policy/url_blacklist_manager_unittest.cc
+++ b/chrome/browser/policy/url_blacklist_manager_unittest.cc
@@ -84,7 +84,7 @@ class TestingURLBlacklistManager : public URLBlacklistManager {
 
 class URLBlacklistManagerTest : public testing::Test {
  protected:
-  URLBlacklistManagerTest() : loop_(base::MessageLoop::TYPE_IO) {}
+  URLBlacklistManagerTest() {}
 
   virtual void SetUp() OVERRIDE {
     pref_service_.registry()->RegisterListPref(policy_prefs::kUrlBlacklist);
@@ -102,7 +102,7 @@ class URLBlacklistManagerTest : public testing::Test {
     blacklist_manager_.reset();
   }
 
-  base::MessageLoop loop_;
+  base::MessageLoopForIO loop_;
   TestingPrefServiceSimple pref_service_;
   scoped_ptr<TestingURLBlacklistManager> blacklist_manager_;
 };