Rotate screen in response to accelerator or device orientation sensors.

athena/screen/public/screen_manager.h

Index: athena/screen/public/screen_manager.h
diff --git a/athena/screen/public/screen_manager.h b/athena/screen/public/screen_manager.h
index 82ad85592bf7067f2b44a9bbddb58f9ac7b17d7f..64f90357dee428fdb904288691e57a45ec8b1335 100644
--- a/athena/screen/public/screen_manager.h
+++ b/athena/screen/public/screen_manager.h
@@ -8,6 +8,7 @@
 #include <string>
 
 #include "athena/athena_export.h"
+#include "ui/gfx/display.h"
 
 namespace aura {
 class Window;
@@ -68,6 +69,11 @@ class ATHENA_EXPORT ScreenManager {
   // Sets the background image.
   virtual void SetBackgroundImage(const gfx::ImageSkia& image) = 0;
 
+  // Set screen rotation.
+  // TODO(flackr): Extract and use ash DisplayManager to set rotation
+  // instead: http://crbug.com/401044.
+  virtual void SetRotation(gfx::Display::Rotation rotation) = 0;
+
   // Returns the LayerAnimator to use to animate the entire screen (e.g. fade
   // screen to white).
   virtual ui::LayerAnimator* GetScreenAnimator() = 0;