Merge "Support showing battery level chart first immediately after the battery...

Merge "Support showing battery level chart first immediately after the battery level data is ready." into tm-qpr-dev am: baa3f3a3

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/19753508



Change-Id: I19b929cca3d6c9f0b48fa8a29c2245ff92c88ffe
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>