update_engine: fixed warnings from cpplint

Fixed all the cpplint warnings in update engine.

BUG=None
TEST=Unit tests still pass.

Change-Id: I285ae858eec8abe0b26ff203b99a42a200ceb71c
Reviewed-on: https://chromium-review.googlesource.com/204027
Reviewed-by: Alex Vakulenko <avakulenko@chromium.org>
Tested-by: Alex Vakulenko <avakulenko@chromium.org>
Commit-Queue: Alex Vakulenko <avakulenko@chromium.org>
diff --git a/omaha_request_action.h b/omaha_request_action.h
index c005cc4..6fef8e5 100644
--- a/omaha_request_action.h
+++ b/omaha_request_action.h
@@ -48,7 +48,7 @@
     kResultError = 0,
     kResultSuccess = 1,
     kResultSuccessReboot = 2,
-    kResultUpdateDeferred = 9, // When we ignore/defer updates due to policy.
+    kResultUpdateDeferred = 9,  // When we ignore/defer updates due to policy.
   };
 
   OmahaEvent()