power_LoadTest: Use a different account to get gmail and docs working.

Set the default credentials to use the power.loadtest Google account.
Point the Docs urls at a couple appropriate documents in that account.
Generate a new extension.crx as per README.txt.

BUG=chromium:238503
TEST=Manually verify Gmail and Docs work when this test runs.
./run_remote_tests power_LoadTest/control.1hour to install the test.
This fails because ethernet is attached.  Remove ethernet and power, then:
$ cd /usr/local/autotest
$ bin/autotest tests/power_LoadTest/control.1hour
Verify that gmail is viewed between minutes 36-48, then docs are viewed
between minutes 48-54.

Change-Id: If3379aeac0527a1317fe6ec6f4c4705bc4104577
Reviewed-on: https://gerrit.chromium.org/gerrit/50846
Reviewed-by: Todd Broch <tbroch@chromium.org>
Reviewed-by: Sameer Nanda <snanda@chromium.org>
Commit-Queue: Bryan Freed <bfreed@chromium.org>
Tested-by: Bryan Freed <bfreed@chromium.org>
3 files changed