arc: Support more orientation lock types.

components/arc/common/app.mojom

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // Next MinVersion: 15
 
 module arc.mojom;
 
 import "scale_factor.mojom";
 import "screen_rect.mojom";
 
 // Describes OrientationLock request.
+// Note: ChromeOS currently assumes the internal panel is always landscape.
+// All rotation angles mentioned here are measured clockwise.
 [Extensible]
 enum OrientationLock {
   NONE = 0,
+  // Rotated 90 or 270 deg.
   PORTRAIT = 1,
+  // Rotated 0 or 180 deg.
   LANDSCAPE = 2,
+  // Keep the current orientation.
   CURRENT = 3,
+  // Rotated 90 deg.
+  PORTRAIT_PRIMARY = 4,
+  // Rotated 0 deg.
+  LANDSCAPE_PRIMARY = 5,
+  // Rotated 270 deg.
+  PORTRAIT_SECONDARY = 6,
+  // Rotated 180 deg.
+  LANDSCAPE_SECONDARY = 7,
 };
 
 // Describes ARC app.
 struct AppInfo {
   string name;
   string package_name;
   string activity;
   [MinVersion=2] bool sticky;  // true if the app cannot be uninstalled
   [MinVersion=7] bool notifications_enabled;
   [MinVersion=12] OrientationLock orientation_lock;
@@ skipping 156 matching lines @@
                                            ShowPackageInfoPage page,
                                            ScreenRect dimension_on_screen);
 
   // Sets notification setting for the package.
   [MinVersion=6] SetNotificationsEnabled@10(string package_name, bool enabled);
 
   // Sends a request to ARC to uninstall the given package.  Error (if ever
   // happens) is ignored, and uninstall option should appear in the UI.
   [MinVersion=2] UninstallPackage@5(string package_name);
 };