commit d70d9e2e8f1c9efb80d1dd1146816d5f265f367a
author bokan <bokan@chromium.org> Fri Jul 08 16:03:53 2016
committer Commit bot <commit-bot@chromium.org> Fri Jul 08 16:05:46 2016
tree 6316f2dee85b09c8bacf2d4adf78c5780e87df9e
parent 6bbc043a24bc36eeaed6c9088e08611ea6e2f7a8

Create the harness and shell of update_test_expectations

This patch creates the main classes and stubs out the main methods. The meat of the
process is left for the next patch. update_test_expectations is a script that looks
at the TestExpectations file and checks each line against results from the build
waterfall to determine if a line is still flaky. Non-flaky entries in TestExpectations
are then removed.

BUG=595414

Review-Url: https://codereview.chromium.org/2119303003
Cr-Commit-Position: refs/heads/master@{#404402}