Merge "Provide a hook for forcing all system bars to be displayed at all times"

diff --cc core/java/android/view/IWindowManager.aidl
Simple merge

diff --cc core/java/android/view/View.java
Simple merge

diff --cc core/java/android/view/ViewRootImpl.java
Simple merge

diff --cc core/res/res/values/config.xml
Simple merge

diff --cc core/res/res/values/symbols.xml
Simple merge

diff --cc services/core/java/com/android/server/wm/DisplayPolicy.java
Simple merge

diff --cc services/core/java/com/android/server/wm/WindowManagerService.java
Simple merge

diff --cc services/core/java/com/android/server/wm/WindowState.java
Simple merge