Fix volume keys when in-call and screen is off due to proximity sensor.

Fixes bug b/2297262 (Volume keys on passion don't work while in-call and phone is pressed to my ear)

Change-Id: I775daa24295482000f87273d1f84dd796fb0f4eb
Signed-off-by: Mike Lockwood <lockwood@android.com>
diff --git a/policy/com/android/internal/policy/impl/PhoneWindowManager.java b/policy/com/android/internal/policy/impl/PhoneWindowManager.java
index 2f9faae..feb0717 100755
--- a/policy/com/android/internal/policy/impl/PhoneWindowManager.java
+++ b/policy/com/android/internal/policy/impl/PhoneWindowManager.java
@@ -1651,14 +1651,11 @@
                     if (!mKeyguardMediator.onWakeKeyWhenKeyguardShowingTq(event.keycode)
                             && (event.keycode == KeyEvent.KEYCODE_VOLUME_DOWN
                                 || event.keycode == KeyEvent.KEYCODE_VOLUME_UP)) {
+                        // when keyguard is showing and screen off, we need
+                        // to handle the volume key for calls and  music here
                         if (isInCall()) {
-                            // if the keyguard didn't wake the device, we are in call, and
-                            // it is a volume key, turn on the screen so that the user
-                            // can more easily adjust the in call volume.
-                            mKeyguardMediator.pokeWakelock();
+                            handleVolumeKey(AudioManager.STREAM_VOICE_CALL, event.keycode);
                         } else if (isMusicActive()) {
-                            // when keyguard is showing and screen off, we need
-                            // to handle the volume key for music here
                             handleVolumeKey(AudioManager.STREAM_MUSIC, event.keycode);
                         }
                     }