GitLab

Bug: 984851

In http://crrev.com/c/1708013, a change was committed to improve
battery life by avoiding unnecessary media caching. This submission,
driven by feedback from http://crbug.com/984851, makes an additional
adjustment in preparation for testing trials.

It adds a check to verify that the device is running on battery
and is not connected to AC power. Since the goal is to improve battery
life, this scopes the change so that it doesn't impact scenarios when
the device is connected to power. The potential disadvantage is that
the caching behavior can now be different depending on whether the
device is connected or not. Since the entire change is under a feature
key, the idea is to verify that the reduction in media caching does
not lead to any discernible difference in user-facing functionality
between the scenarios during the testing trials.

Change-Id: I8b73da81a509962701e30cfd43f36b34b0dc70b2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1830069Reviewed-by: Maksim Orlovich <morlovich@chromium.org>
Reviewed-by: Chrome Cunningham <chcunningham@chromium.org>
Commit-Queue: Shawn Pickett <shawnpi@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#734104}