ActivityManagerService: Disable app crashed dialog on headless builds

Change-Id: I78bf2cb2cd9f99db57f447b7bfaca80c4fefbd66
Signed-off-by: Mike Lockwood <lockwood@android.com>
diff --git a/services/java/com/android/server/am/ActivityManagerService.java b/services/java/com/android/server/am/ActivityManagerService.java
index d21212f..7a39c84 100644
--- a/services/java/com/android/server/am/ActivityManagerService.java
+++ b/services/java/com/android/server/am/ActivityManagerService.java
@@ -7394,6 +7394,10 @@
     }
 
     private boolean handleAppCrashLocked(ProcessRecord app) {
+        if (mHeadless) {
+            Log.e(TAG, "handleAppCrashLocked: " + app.processName);
+            return false;
+        }
         long now = SystemClock.uptimeMillis();
 
         Long crashTime;