Chrome on Chromeos Perf: Upload Results to Google Storage

Added a post-processing step to the pyauto_perf suite to upload the necessary
perf results back to the google storage directory we downloaded the build
artifacts from.

The perf results are placed in the form of pyauto_perf.results

BUG=chromium-os:33964
TEST=Tested on ToT using remote trybots.
CQ-DEPENDS: I2b993c7b561c2abae9ed2717515c9b394bcecfa5
Change-Id: I6af12674c3cfa031b6382e4cc3fe2f735743486a
Reviewed-on: https://gerrit.chromium.org/gerrit/34199
Commit-Ready: Simran Basi <sbasi@chromium.org>
Reviewed-by: Simran Basi <sbasi@chromium.org>
Tested-by: Simran Basi <sbasi@chromium.org>
5 files changed