Fix software mirror mode on Ozone part 2/2

ash/display/display_manager.h

Index: ash/display/display_manager.h
diff --git a/ash/display/display_manager.h b/ash/display/display_manager.h
index 092d2b002961288a666af8254c5029df6edf93e5..5fdbf3633916540e1794e2a522be797db96c2f56 100644
--- a/ash/display/display_manager.h
+++ b/ash/display/display_manager.h
@@ -245,9 +245,9 @@ class ASH_EXPORT DisplayManager
 
   // Returns the mirroring status.
   bool IsMirrored() const;
-  int64 mirrored_display_id() const { return mirrored_display_id_; }
+  int64 mirroring_display_id() const { return mirroring_display_id_; }
 
-  // Returns the display used for software mirrroring.
+  // Returns the display used for mirrroring.
   const gfx::Display& mirroring_display() const {
     return mirroring_display_;
   }
@@ -390,7 +390,7 @@ private:
   bool change_display_upon_host_resize_;
 
   SecondDisplayMode second_display_mode_;
-  int64 mirrored_display_id_;
+  int64 mirroring_display_id_;
   gfx::Display mirroring_display_;
 
   // User preference for rotation lock of the internal display.