tree a482130e3530bdcc46ce282397b62153388f6f61
parent b53fc06a4b2238eb084af62490af188e2b93d36d
author Masaya Suzuki <masayasuzuki@google.com> 1553560544 -0700
committer Masaya Suzuki <masayasuzuki@google.com> 1557447304 -0700

Throw GitilesRequestFailureException

There are many cases that `return null` should be replaced with `throw
new GitilesRequestFailureException`. However, its correctness is hard to
check at scale. This change focuses on replacing `sendError` calls with
GitilesRequestFailureException. Later, we can change `return null` and
dropping exception cases to use GitilesRequestFailureException.

Change-Id: Ic502b82030f7cdd5db6cea7aaedd07c9b6ff6725