Fix Floating Window

Change-Id: I12257f21672094791cdfc802c62a7ef5837721d1

Conflicts:
	core/java/android/app/Activity.java
Miss import of Floating Window

Change-Id: I96496ac2560a0256e2029381f6ead80da1964390
fix

Change-Id: Ie5966a0dc5139bd3f5c7224647a4f37ded414b5c