update_engine: Run clang-format on common/

BUG=none
TEST=unittest

Change-Id: Icdaf5017e03a197bc576f08f4b8dcdd00cff217c
Reviewed-on: https://chromium-review.googlesource.com/1407541
Commit-Ready: Amin Hassani <ahassani@chromium.org>
Tested-by: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Sen Jiang <senj@chromium.org>
diff --git a/common/mock_http_fetcher.cc b/common/mock_http_fetcher.cc
index 9507c9d..10e3b9e 100644
--- a/common/mock_http_fetcher.cc
+++ b/common/mock_http_fetcher.cc
@@ -32,8 +32,8 @@
 namespace chromeos_update_engine {
 
 MockHttpFetcher::~MockHttpFetcher() {
-  CHECK(timeout_id_ == MessageLoop::kTaskIdNull) <<
-      "Call TerminateTransfer() before dtor.";
+  CHECK(timeout_id_ == MessageLoop::kTaskIdNull)
+      << "Call TerminateTransfer() before dtor.";
 }
 
 void MockHttpFetcher::BeginTransfer(const std::string& url) {