AU: Try delta updates first, then full updates

src/platform/update_engine/action_unittest.cc

 // Copyright (c) 2009 The Chromium OS Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include <string>
 #include <gtest/gtest.h>
 #include "update_engine/action.h"
 #include "update_engine/action_processor.h"
 
+using std::string;
+
 namespace chromeos_update_engine {
 
 using chromeos_update_engine::ActionPipe;
 
 class ActionTestAction;
 
 template<>
 class ActionTraits<ActionTestAction> {
  public:
   typedef string OutputObjectType;
@@ skipping 31 matching lines @@
   action_processor.EnqueueAction(&action);
   EXPECT_EQ(&action_processor, action.processor());
 
   action_processor.StartProcessing();
   EXPECT_TRUE(action.IsRunning());
   action.CompleteAction();
   EXPECT_FALSE(action.IsRunning());
 }
 
 }  // namespace chromeos_update_engine