Disable more hotkeys while in setup.

Disables fallback key processing for CALL, CAMERA, and HEADSETHOOK
buttons.

Bug: 19767816
Change-Id: I423103c367e05827c939cd8d8dbecb6012b0e9f0
diff --git a/services/core/java/com/android/server/media/MediaSessionService.java b/services/core/java/com/android/server/media/MediaSessionService.java
index 77a1fa9..72e4b4b 100644
--- a/services/core/java/com/android/server/media/MediaSessionService.java
+++ b/services/core/java/com/android/server/media/MediaSessionService.java
@@ -56,6 +56,7 @@
 import android.speech.RecognizerIntent;
 import android.text.TextUtils;
 import android.util.Log;
+import android.util.Slog;
 import android.util.SparseArray;
 import android.view.KeyEvent;
 
@@ -715,11 +716,19 @@
                 Log.w(TAG, "Attempted to dispatch null or non-media key event.");
                 return;
             }
+
             final int pid = Binder.getCallingPid();
             final int uid = Binder.getCallingUid();
             final long token = Binder.clearCallingIdentity();
-
             try {
+                if (!isUserSetupComplete()) {
+                    // Global media key handling can have the side-effect of starting new
+                    // activities which is undesirable while setup is in progress.
+                    Slog.i(TAG, "Not dispatching media key event because user "
+                            + "setup is in progress.");
+                    return;
+                }
+
                 synchronized (mLock) {
                     // If we don't have a media button receiver to fall back on
                     // include non-playing sessions for dispatching
@@ -1007,6 +1016,11 @@
             return keyCode == KeyEvent.KEYCODE_HEADSETHOOK;
         }
 
+        private boolean isUserSetupComplete() {
+            return Settings.Secure.getIntForUser(getContext().getContentResolver(),
+                    Settings.Secure.USER_SETUP_COMPLETE, 0, UserHandle.USER_CURRENT) != 0;
+        }
+
         // we only handle public stream types, which are 0-5
         private boolean isValidLocalStreamType(int streamType) {
             return streamType >= AudioManager.STREAM_VOICE_CALL