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/http_fetcher.h b/common/http_fetcher.h
index 1f5c945..2b4fc83 100644
--- a/common/http_fetcher.h
+++ b/common/http_fetcher.h
@@ -73,9 +73,7 @@
   void SetProxies(const std::deque<std::string>& proxies) {
     proxies_ = proxies;
   }
-  const std::string& GetCurrentProxy() const {
-    return proxies_.front();
-  }
+  const std::string& GetCurrentProxy() const { return proxies_.front(); }
   bool HasProxy() const { return !proxies_.empty(); }
   void PopProxy() { proxies_.pop_front(); }