SystemUI: change back button to hide ime buttom with rotate animation.

Change-Id: Ia9a7716a6797d0442670451e59857d44b579b5f6
input: Forward-port support for chained input filters

 * Original code by Jens Doll for Pie controls
 * Needed now to support the gesture sensor

Change-Id: I0b86d70f9a040ba5953e1820e9818df0f10091ee
[2/2] framework/base: Add EdgeGesture service.

Based on code of PieService.

Change-Id: I053737e36340a5ec6814b21eb87575f9689c7e88
allow forcing HighEndGfx mode

people have already started fipping the lomRam prop to enable
transparent status bar, this will enable it with fewer
repercussions

Change-Id: Ied6de65276425fa1e7db0bf9da35f1932a355172
PhoneWindowManager: add ability to use EdgeGestureService for system gestures.

Update: Default to enabled

Conflicts:
	core/java/android/provider/Settings.java
	policy/src/com/android/internal/policy/impl/PhoneWindowManager.java

Change-Id: Id4e2c0d82f771cd1c20e9196fb6db347494cca69
Merge branch 'cm-12.0' of https://github.com/CyanogenMod/android_frameworks_base into cm-12.0

Conflicts:
	policy/src/com/android/internal/policy/impl/PhoneWindowManager.java