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/hash_calculator.cc b/common/hash_calculator.cc
index ebfdb6e..d010a53 100644
--- a/common/hash_calculator.cc
+++ b/common/hash_calculator.cc
@@ -95,7 +95,8 @@
   return RawHashOfBytes(data.data(), data.size(), out_hash);
 }
 
-off_t HashCalculator::RawHashOfFile(const string& name, off_t length,
+off_t HashCalculator::RawHashOfFile(const string& name,
+                                    off_t length,
                                     brillo::Blob* out_hash) {
   HashCalculator calc;
   off_t res = calc.UpdateFile(name, length);