[Bluetooth] Enable by default peripheral battery UI indication.

Bug: 785758
Change-Id: I35f3270d0b61b8f0e3e3bde6d64f5b1c54f1a254
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1752913
Commit-Queue: Ryan Hansberry <hansberry@chromium.org>
Commit-Queue: Kyle Horimoto <khorimoto@chromium.org>
Auto-Submit: Ryan Hansberry <hansberry@chromium.org>
Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Cr-Commit-Position: refs/heads/master@{#686638}

chromeos/constants/chromeos_features.cc

@@ -164,7 +164,7 @@ const base::Feature kReleaseNotes{"ReleaseNotes",
 // Enables or disables showing the battery level in the System Tray and Settings
 // UI for supported Bluetooth Devices.
 const base::Feature kShowBluetoothDeviceBattery{
-    "ShowBluetoothDeviceBattery", base::FEATURE_DISABLED_BY_DEFAULT};
+    "ShowBluetoothDeviceBattery", base::FEATURE_ENABLED_BY_DEFAULT};
 
 // Shows the Play Store icon in Demo Mode.
 const base::Feature kShowPlayInDemoMode{"ShowPlayInDemoMode",