Do not allow Tasks to influence orientation under some conditions.

When all AppWindowTokens belonging to a Task are closing, it should
not be considered for orientation. Likewise, if a task is moving to
the bottom, it should also not be considered.

Change-Id: Ie387457c413d5360afbb0ac8edb112f81feab81b
Fixes: 35699615
Test: bit FrameworksServicesTests:com.android.server.wm.TaskStackTests#testClosingAppDifferentStackOrientation
Test: bit FrameworksServicesTests:com.android.server.wm.TaskStackTests#testMoveTaskToBackDifferentStackOrientation
Test: cts/hostsidetests/services/activityandwindowmanager/util/run-test CtsServicesHostTestCases android.server.cts.ActivityManagerAppConfigurationTests#testTaskCloseRestoreOrientation
Test: cts/hostsidetests/services/activityandwindowmanager/util/run-test CtsServicesHostTestCases android.server.cts.ActivityManagerAppConfigurationTests#testTaskMoveToBackOrientation
diff --git a/services/tests/servicestests/src/com/android/server/wm/TaskStackTests.java b/services/tests/servicestests/src/com/android/server/wm/TaskStackTests.java
index 1c69033..3ce3df1 100644
--- a/services/tests/servicestests/src/com/android/server/wm/TaskStackTests.java
+++ b/services/tests/servicestests/src/com/android/server/wm/TaskStackTests.java
@@ -16,6 +16,9 @@
 
 package com.android.server.wm;
 
+import android.content.pm.ActivityInfo;
+import android.view.WindowManager;
+import android.view.WindowManager.LayoutParams;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
@@ -23,6 +26,9 @@
 import android.support.test.filters.SmallTest;
 import android.support.test.runner.AndroidJUnit4;
 
+import static android.content.pm.ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
+import static android.content.pm.ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
+
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotNull;
@@ -58,6 +64,42 @@
     }
 
     @Test
+    public void testClosingAppDifferentStackOrientation() throws Exception {
+        final TaskStack stack = createTaskStackOnDisplay(sDisplayContent);
+        final Task task1 = createTaskInStack(stack, 0 /* userId */);
+        TestAppWindowToken appWindowToken1 = new TestAppWindowToken(sDisplayContent);
+        task1.addChild(appWindowToken1, 0);
+        appWindowToken1.setOrientation(SCREEN_ORIENTATION_LANDSCAPE);
+
+        final Task task2 = createTaskInStack(stack, 1 /* userId */);
+        TestAppWindowToken appWindowToken2 = new TestAppWindowToken(sDisplayContent);
+        task2.addChild(appWindowToken2, 0);
+        appWindowToken2.setOrientation(SCREEN_ORIENTATION_PORTRAIT);
+
+        assertEquals(stack.getOrientation(), SCREEN_ORIENTATION_PORTRAIT);
+        sWm.mClosingApps.add(appWindowToken2);
+        assertEquals(stack.getOrientation(), SCREEN_ORIENTATION_LANDSCAPE);
+    }
+
+    @Test
+    public void testMoveTaskToBackDifferentStackOrientation() throws Exception {
+        final TaskStack stack = createTaskStackOnDisplay(sDisplayContent);
+        final Task task1 = createTaskInStack(stack, 0 /* userId */);
+        TestAppWindowToken appWindowToken1 = new TestAppWindowToken(sDisplayContent);
+        task1.addChild(appWindowToken1, 0);
+        appWindowToken1.setOrientation(SCREEN_ORIENTATION_LANDSCAPE);
+
+        final Task task2 = createTaskInStack(stack, 1 /* userId */);
+        TestAppWindowToken appWindowToken2 = new TestAppWindowToken(sDisplayContent);
+        task2.addChild(appWindowToken2, 0);
+        appWindowToken2.setOrientation(SCREEN_ORIENTATION_PORTRAIT);
+
+        assertEquals(stack.getOrientation(), SCREEN_ORIENTATION_PORTRAIT);
+        task2.setSendingToBottom(true);
+        assertEquals(stack.getOrientation(), SCREEN_ORIENTATION_LANDSCAPE);
+    }
+
+    @Test
     public void testStackRemoveImmediately() throws Exception {
         final TaskStack stack = createTaskStackOnDisplay(sDisplayContent);
         final Task task = createTaskInStack(stack, 0 /* userId */);