Move ash::DisplayInfo to ui

ash/display/mirror_window_controller.h

Index: ash/display/mirror_window_controller.h
diff --git a/ash/display/mirror_window_controller.h b/ash/display/mirror_window_controller.h
index 40569439479cf996950beebbb1bea44dbfda95d0..a5f5cc93482a8961ec92f23eae7ed4b0a6f78a95 100644
--- a/ash/display/mirror_window_controller.h
+++ b/ash/display/mirror_window_controller.h
@@ -33,12 +33,12 @@ class Display;
 }
 
 namespace ui {
+class DisplayInfo;
 class Reflector;
 }
 
 namespace ash {
 class AshWindowTreeHost;
-class DisplayInfo;
 class RootWindowTransformer;
 
 namespace test {
@@ -55,7 +55,7 @@ class ASH_EXPORT MirrorWindowController : public aura::WindowTreeHostObserver {
 
   // Updates the root window's bounds using |display_info|.
   // Creates the new root window if one doesn't exist.
-  void UpdateWindow(const std::vector<DisplayInfo>& display_info);
+  void UpdateWindow(const std::vector<ui::DisplayInfo>& display_info);
 
   // Same as above, but using existing display info
   // for the mirrored display.