Report graphics results to chrome-perf dashboard.

The two WebGL tests still need to be converted to Telemetry, but
GLBench, GLMark2 and Piglit seem to produce valid perf_measurements
files.

BUG=None.
TEST=1) python perf_uploader_unittest.py
     2) run_remote_test of all affected graphics_* tests.
     3) Check perf_measurements files.

Change-Id: I74ad29cddc3c7de1e161e5d516135bd284e70274
Reviewed-on: https://chromium-review.googlesource.com/182548
Reviewed-by: Ilja Friedel <ihf@chromium.org>
Commit-Queue: Ilja Friedel <ihf@chromium.org>
Tested-by: Ilja Friedel <ihf@chromium.org>
6 files changed