Store rotation/ui scale to local state.

ash/display/display_info.h

 // Copyright (c) 2013 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_DISPLAY_INFO_H_
 #define ASH_DISPLAY_DISPLAY_INFO_H_
 
 #include <string>
 
 #include "ash/ash_export.h"
@@ skipping 99 matching lines @@
   //    that it has overscan (|has_overscan_| is true), then updates
   //    |overscan_insets_in_dip_| to default value (5% of the display size)
   //    and apply the insets.
   // 3) Otherwise, clear the overscan insets.
   void UpdateDisplaySize();
 
   // Sets/Clears the overscan insets.
   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;
 
  private:
   FRIEND_TEST_ALL_PREFIXES(DisplayManagerTest, AutomaticOverscanInsets);
   // Set the overscan flag. Used for test.
   void set_has_overscan_for_test(bool has_overscan) {
     has_overscan_ = has_overscan;
   }
 
@@ skipping 13 matching lines @@
   bool has_custom_overscan_insets_;
 
   // UI scale of the display.
   float ui_scale_;
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  //  ASH_DISPLAY_DISPLAY_INFO_H_