Revert "Equalizer Tiles : fix possible NPE"

This reverts commit d45650eb86a754bad1255de5ea6dc68f08845c6f.
Revert "[1/2] fb: Change density on the fly"

This reverts commit 05b69c0c8c6e351ab3bb49db29d4253d16cc6034.
fb: Change density on the fly

Change-Id: I7ee16d32ee882fea22367f49f69f4da744f3aa45

Conflicts:
	core/java/android/view/WindowManagerPolicy.java
	policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
NavigationBar : Inline with Slim