AU: Try delta updates first, then full updates

src/platform/update_engine/download_action_unittest.cc

Index: src/platform/update_engine/download_action_unittest.cc
diff --git a/src/platform/update_engine/download_action_unittest.cc b/src/platform/update_engine/download_action_unittest.cc
index 4276dc9d1d3b85987dfa111a16c1a65e58c830c6..57e8d7e546dd929ce63005ef83ca3f45ab2166ae 100644
--- a/src/platform/update_engine/download_action_unittest.cc
+++ b/src/platform/update_engine/download_action_unittest.cc
@@ -28,7 +28,7 @@ class DownloadActionTestProcessorDelegate : public ActionProcessorDelegate {
   virtual ~DownloadActionTestProcessorDelegate() {
     EXPECT_TRUE(processing_done_called_);
   }
-  virtual void ProcessingDone(const ActionProcessor* processor) {
+  virtual void ProcessingDone(const ActionProcessor* processor, bool success) {
     ASSERT_TRUE(loop_);
     g_main_loop_quit(loop_);
     vector<char> found_data;
@@ -214,7 +214,7 @@ namespace {
 // only by the test PassObjectOutTest.
 class PassObjectOutTestProcessorDelegate : public ActionProcessorDelegate {
  public:
-  void ProcessingDone(const ActionProcessor* processor) {
+  void ProcessingDone(const ActionProcessor* processor, bool success) {
     ASSERT_TRUE(loop_);
     g_main_loop_quit(loop_);
   }