Printing API: Fix proto conversions test

Bug: 992889
Change-Id: I8a57c5c011cf9470d8173c3e2ef0cdfd001f6eec
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1819360Reviewed-by: Nikita Podguzov <nikitapodguzov@chromium.org>
Reviewed-by: Denis Kuznetsov <antrim@chromium.org>
Commit-Queue: Nikita Podguzov <nikitapodguzov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#698863}

chrome/browser/chromeos/printing/history/print_job_info_proto_conversions_unittest.cc

@@ -23,8 +23,8 @@ constexpr char kUri[] = "ipp://192.168.1.5";
 constexpr char kTitle[] = "title";
 constexpr char kId[] = "id";
 constexpr char kSourceId[] = "extension:123";
-constexpr int kJobCreationTime = 1000;
-constexpr int kJobDuration = 10 * 1000;
+constexpr int64_t kJobCreationTime = 1000;
+constexpr int64_t kJobDuration = 10 * 1000;
 constexpr int kPagesNumber = 3;
 
 }  // namespace