Roll breakpad r1375 -> r1384.
r1384 Fix clang compilation error introduced in r1380.
r1381 Add inttypes for windows in dump_context
r1380 Extend mapping merge to include reserved but unused mappings.
r1379 GoogleCrashdumpUploader: adds Upload(string*) API to get the HTTP response.
r1378 Fixes common_unittests build.
r1377 Fix Windows client unittests build: add missing code files
r1376 Making the Mac build of crash_report work again after the last SVN sync
BUG=394703
Review URL: https://codereview.chromium.org/
595493002
Cr-Commit-Position: refs/heads/master@{#296163}