Fix Chromium issue 40759522: color installed web app nav bar with manifest theme color

[hjanuschka]

Chromium Issue

https://issues.chromium.org/issues/40759522

Description

Fixed a bug where installed PWAs on Android colored the status bar from the manifest theme_color but left the Android navigation bar at the platform default, so the two bars did not visually match the app's theme.

Fix

Reuse the manifest theme color for the Android navigation bar and hoist the update into BaseCustomTabActivity so it also runs for webapp / WebAPK activities, behind the default-on WebAppNavigationBarThemeColor killswitch.

CL

https://chromium-review.googlesource.com/c/chromium/src/+/8077818

Demo

https://static.januschka.com/i-40759522/

Status

Merged.