cros: Treat set rotation for chrome.system.display API in touchview mode as if user rotation lock

ash/display/screen_orientation_controller_chromeos.h

 // Copyright 2014 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.
 
 #ifndef ASH_DISPLAY_SCREEN_ORIENTATION_CONTROLLER_CHROMEOS_H_
 #define ASH_DISPLAY_SCREEN_ORIENTATION_CONTROLLER_CHROMEOS_H_
 
 #include <map>
 
 #include "ash/ash_export.h"
@@ skipping 28 matching lines @@
     // Invoked when rotation is locked or unlocked by a user.
     virtual void OnUserRotationLockChanged() {}
 
    protected:
     virtual ~Observer() {}
   };
 
   ScreenOrientationController();
   ~ScreenOrientationController() override;
 
+  static blink::WebScreenOrientationLockType RotationToOrientation(
+      display::Display::Rotation rotation);
+
   // Add/Remove observers.
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
 
   // Allows/unallows a window to lock the screen orientation.
   void LockOrientationForWindow(
       WmWindow* requesting_window,
       blink::WebScreenOrientationLockType lock_orientation);
   void UnlockOrientationForWindow(WmWindow* window);
 
@@ skipping 13 matching lines @@
   bool user_rotation_locked() const {
     return user_locked_orientation_ != blink::WebScreenOrientationLockAny;
   }
 
   // Trun on/off the user rotation lock. When turned on, it will lock
   // the orientation to the current orientation.
   // |user_rotation_locked()| method returns the current state of the
   // user rotation lock.
   void ToggleUserRotationLock();
 
+  // Set Locked to the given |orientation|.

[oshima, 2017/03/30 00:44:37]

mention that this will be saved

[Qiang(Joe) Xu, 2017/03/30 01:15:14]

Done.

+  void SetLockToOrientation(blink::WebScreenOrientationLockType orientation);

[oshima, 2017/03/30 00:44:37]

can you just take the rotation, and do conversion in cc?

[Qiang(Joe) Xu, 2017/03/30 01:15:14]

Done.

+
   // aura::client::ActivationChangeObserver:
   void OnWindowActivated(ActivationReason reason,
                          aura::Window* gained_active,
                          aura::Window* lost_active) override;
 
   // aura::WindowObserver:
   void OnWindowDestroying(aura::Window* window) override;
   void OnWindowVisibilityChanged(aura::Window* window, bool visible) override;
 
   // chromeos::AccelerometerReader::Observer:
@@ skipping 101 matching lines @@
   // Tracks all windows that have requested a lock, as well as the requested
   // orientation.
   std::map<WmWindow*, blink::WebScreenOrientationLockType> locking_windows_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenOrientationController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_SCREEN_ORIENTATION_CONTROLLER_CHROMEOS_H_