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/update_check_scheduler_unittest.cc b/update_check_scheduler_unittest.cc
index 79e9974..cd79a23 100644
--- a/update_check_scheduler_unittest.cc
+++ b/update_check_scheduler_unittest.cc
@@ -205,7 +205,7 @@
 
 TEST_F(UpdateCheckSchedulerTest, ScheduleCheckEnabledTest) {
   int interval_min, interval_max;
-  FuzzRange(100, 10, &interval_min,&interval_max);
+  FuzzRange(100, 10, &interval_min, &interval_max);
   EXPECT_CALL(scheduler_,
               GTimeoutAddSeconds(AllOf(Ge(interval_min), Le(interval_max)),
                                  scheduler_.StaticCheck)).Times(1);