Added check of ActivityInfo launch mode when starting activity.

When starting a singleTop activity from a singleInstance activity,
the onNewIntent() callback was not called when expected. The
reason for this was that only the launchMode specified on the
intent was checked and not the launchMode specified in the manifest.

Fixes issue 17137.

Change-Id: I1a9bc1007d6f5145bf93a6161534732bf5214b7a

Author: Johan Viktorsson

services/java/com/android/server/am/ActivityStack.java

@@ -2762,7 +2762,8 @@ final int startActivityUncheckedLocked(ActivityRecord r,
                         // If the top activity in the task is the root
                         // activity, deliver this new intent to it if it
                         // desires.
-                        if ((launchFlags&Intent.FLAG_ACTIVITY_SINGLE_TOP) != 0
+                        if (((launchFlags&Intent.FLAG_ACTIVITY_SINGLE_TOP) != 0
+                                || r.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP)
                                 && taskTop.realActivity.equals(r.realActivity)) {
                             logStartActivity(EventLogTags.AM_NEW_INTENT, r, taskTop.task);
                             if (taskTop.frontOfTask) {