Refactor usages of Picture In Picture and Multi Window (1/4)

Bug: 27365860
Change-Id: I1590e430a12ceb84cb83da295e0bf7e4378fea96
diff --git a/core/java/android/app/IActivityManager.java b/core/java/android/app/IActivityManager.java
index 417c0679..8ee6fd0 100644
--- a/core/java/android/app/IActivityManager.java
+++ b/core/java/android/app/IActivityManager.java
@@ -623,11 +623,11 @@
 
     public int getAppStartMode(int uid, String packageName) throws RemoteException;
 
-    public boolean inMultiWindow(IBinder token) throws RemoteException;
+    public boolean isInMultiWindowMode(IBinder token) throws RemoteException;
 
-    public boolean inPictureInPicture(IBinder token) throws RemoteException;
+    public boolean isInPictureInPictureMode(IBinder token) throws RemoteException;
 
-    public void enterPictureInPicture(IBinder token) throws RemoteException;
+    public void enterPictureInPictureMode(IBinder token) throws RemoteException;
 
     public int setVrMode(IBinder token, boolean enabled, ComponentName packageName)
             throws RemoteException;