Store rotation/ui scale to local state.

ash/display/display_info.h

Index: ash/display/display_info.h
diff --git a/ash/display/display_info.h b/ash/display/display_info.h
index 520a8f7aaa3901c23a289d513eb794c58dea9ad7..0c70a3d87e1729cc5d753ac9b004d4200d1f10fa 100644
--- a/ash/display/display_info.h
+++ b/ash/display/display_info.h
@@ -117,10 +117,15 @@ class ASH_EXPORT DisplayInfo {
   void SetOverscanInsets(bool custom,
                          const gfx::Insets& insets_in_dip);
   gfx::Insets GetOverscanInsetsInPixel() const;
+
   void clear_has_custom_overscan_insets() {
     has_custom_overscan_insets_ = false;
   }
 
+  bool has_custom_overscan_insets() const {
+    return has_custom_overscan_insets_;
+  }
+
   // Returns a string representation of the DisplayInfo;
   std::string ToString() const;