Send email notifications for (newly) failing Mojo builds.
Send email notifications for (newly) failing Mojo builds.

R=jam@chromium.org

Review URL: https://codereview.chromium.org/726673007

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@293243 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build