Don't activate keyguard if screen is turned off while proximity sensor is active.

Signed-off-by: Mike Lockwood <lockwood@android.com>

core/java/android/view/WindowManagerPolicy.java

@@ -355,6 +355,8 @@ public interface WindowManagerPolicy {
     public final int OFF_BECAUSE_OF_USER = 1;
     /** Screen turned off because of timeout */
     public final int OFF_BECAUSE_OF_TIMEOUT = 2;
+    /** Screen turned off because of proximity sensor */
+    public final int OFF_BECAUSE_OF_PROXIMITY_SENSOR = 3;
 
     /**
      * Magic constant to {@link IWindowManager#setRotation} to not actually

services/java/com/android/server/PowerManagerService.java

@@ -949,6 +949,9 @@ class PowerManagerService extends IPowerManager.Stub
 
     private void sendNotificationLocked(boolean on, int why)
     {
+        if (mProximitySensorActive) {
+            why = WindowManagerPolicy.OFF_BECAUSE_OF_PROXIMITY_SENSOR;
+        }
         if (!on) {
             mStillNeedSleepNotification = false;
         }