Enable sync for the settings from the Extension Settings API.

chrome/browser/extensions/extension_settings_storage_unittest.cc

Index: chrome/browser/extensions/extension_settings_storage_unittest.cc
diff --git a/chrome/browser/extensions/extension_settings_storage_unittest.cc b/chrome/browser/extensions/extension_settings_storage_unittest.cc
index fc1a36141baab01f36b266a0becb5112fb2239a5..7662cb9270bcddaffbc567e6549a843925b31f3a 100644
--- a/chrome/browser/extensions/extension_settings_storage_unittest.cc
+++ b/chrome/browser/extensions/extension_settings_storage_unittest.cc
@@ -86,8 +86,13 @@ void ExtensionSettingsStorageTest::SetUp() {
   FilePath temp_dir;
   file_util::CreateNewTempDirectory(FilePath::StringType(), &temp_dir);
   settings_ = new ExtensionSettings(temp_dir);
-  storage_ = (GetParam())(settings_.get(), "fakeExtension");
-  DCHECK(storage_ != NULL);
+  storage_ = (GetParam())(settings_, "fakeExtension");
+  ASSERT_TRUE(storage_ != NULL);
+}
+
+void ExtensionSettingsStorageTest::TearDown() {
+  BrowserThread::DeleteSoon(BrowserThread::FILE, FROM_HERE, settings_);
+  MessageLoop::current()->RunAllPending();
 }
 
 TEST_P(ExtensionSettingsStorageTest, GetWhenEmpty) {