Provide game task bitmap to TakeScreenshotService as screenshot

* Move the BitmapUtil to com.android.internal package
* Remove bitmap result from GameSession#takeScreenshot API

Bug: 219992742
Test: atest GameServiceProviderInstanceImplTest
Change-Id: I4bf29d623f781434ec7ffe4443e658880c31e619
Move the BitmapUtil to com.android.internal package
10 files changed