4d3334c50b
Now that we are changing the WebView package mechanism so that a package can only be used as WebView implementation if that package is enabled for all users of the device we need to tell the user why a package can't be chosen as WebView implementation. With this CL we do so in the 'Set WebView Implementation' Developer Setting. We code for the WebView implementation Developer Setting is now based on the same code as that of the Debug App Developer Setting. Bug: 32894154 Test: Ensure WebView Implementation setting shows correct packages. Test: Ensure WebView Implementation setting shows correct descriptions for why a package is not usable - including the case where packages are disabled/uninstalled for a second user. Test: Ensure the summary for the WebView Implmentation setting is updated after changing WebView package. Test: Ensure the WebView package Activity (Settings.ACTION_WEBVIEW_SETTINGS) is similar to the Dev Setting. Test: ensure non-admin user cannot start WV-picker activity through 'adb shell am start -n com.android.settings/.WebViewImplementation' Change-Id: Ia6e6e9e12ce8f8f45ec539807cd0c6479acb8ecb