Fix issue #5636525: ANR observed in setup wizard after changing language

We could sometimes allow a process to be killed while still waiting for
an activity in it to finish stopping.

Change-Id: Ibf89665c4ad6da6be22de04a82b19ef778a7fda0

Author: Dianne Hackborn

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

@@ -2720,6 +2720,10 @@ private final void handleAppDiedLocked(ProcessRecord app,
                     }
                     if (!r.finishing) {
                         Slog.w(TAG, "Force removing " + r + ": app died, no saved state");
+                        EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY,
+                                System.identityHashCode(r),
+                                r.task.taskId, r.shortComponentName,
+                                "proc died without state saved");
                     }
                     r.makeFinishing();
                     mMainStack.mHistory.remove(i);
@@ -13596,6 +13600,7 @@ private final int computeOomAdjLocked(ProcessRecord app, int hiddenAdj,
                         adj = ProcessList.PERCEPTIBLE_APP_ADJ;
                         app.adjType = "stopping";
                     }
+                    app.hidden = false;
                     app.foregroundActivities = true;
                 }
             }