AU: More UpdateAttempter unit tests.

BUG=6243
TEST=unit tests

Change-Id: I364cf8f4744098e45a6537bb89c6cabf92f3889c

Review URL: http://codereview.chromium.org/5301002
diff --git a/update_attempter.h b/update_attempter.h
index ba0bd94..1709a3a 100644
--- a/update_attempter.h
+++ b/update_attempter.h
@@ -115,8 +115,13 @@
 
  private:
   friend class UpdateAttempterTest;
+  FRIEND_TEST(UpdateAttempterTest, ActionCompletedDownloadTest);
+  FRIEND_TEST(UpdateAttempterTest, ActionCompletedErrorTest);
+  FRIEND_TEST(UpdateAttempterTest, ActionCompletedOmahaRequestTest);
   FRIEND_TEST(UpdateAttempterTest, DisableDeltaUpdateIfNeededTest);
   FRIEND_TEST(UpdateAttempterTest, MarkDeltaUpdateFailureTest);
+  FRIEND_TEST(UpdateAttempterTest, ScheduleErrorEventActionNoEventTest);
+  FRIEND_TEST(UpdateAttempterTest, ScheduleErrorEventActionTest);
   FRIEND_TEST(UpdateAttempterTest, UpdateTest);
 
   // Sets the status to the given status and notifies a status update
@@ -160,7 +165,7 @@
   // If this was a delta update attempt that failed, count it so that a full
   // update can be tried when needed.
   void MarkDeltaUpdateFailure();
-  
+
   ProxyResolver* GetProxyResolver() {
     return obeying_proxies_ ?
         reinterpret_cast<ProxyResolver*>(&chrome_proxy_resolver_) :