[Athena] Make a quick power button tap suspend the device

athena/screen/screen_manager_impl.cc

Index: athena/screen/screen_manager_impl.cc
diff --git a/athena/screen/screen_manager_impl.cc b/athena/screen/screen_manager_impl.cc
index 0b9f67e10079de23282d1b28b0af1d83e7f749de..fc88cba47f10766ce117b81a894dd060cb101ea7 100644
--- a/athena/screen/screen_manager_impl.cc
+++ b/athena/screen/screen_manager_impl.cc
@@ -206,7 +206,6 @@ class ScreenManagerImpl : public ScreenManager {
   virtual aura::Window* GetContext() OVERRIDE { return root_window_; }
   virtual void SetRotation(gfx::Display::Rotation rotation) OVERRIDE;
   virtual void SetRotationLocked(bool rotation_locked) OVERRIDE;
-  virtual ui::LayerAnimator* GetScreenAnimator() OVERRIDE;
 
   // Not owned.
   aura::Window* root_window_;
@@ -362,10 +361,6 @@ void ScreenManagerImpl::SetRotationLocked(bool rotation_locked) {
     SetRotation(last_requested_rotation_);
 }
 
-ui::LayerAnimator* ScreenManagerImpl::GetScreenAnimator() {
-  return root_window_->layer()->GetAnimator();
-}
-
 }  // namespace
 
 ScreenManager::ContainerParams::ContainerParams(const std::string& n,