Enable subpixel positioning for internal display with dsf larger than 1.0

ash/display/display_manager.h

 // Copyright (c) 2012 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_MANAGER_H_
 #define ASH_DISPLAY_DISPLAY_MANAGER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 104 matching lines @@
   // Returns the display id of the first display in the outupt list.
   int64 first_display_id() const { return first_display_id_; }
 
   // Initializes displays using command line flag. Returns false
   // if no command line flag was provided.
   bool InitFromCommandLine();
 
   // Initialize default display.
   void InitDefaultDisplay();
 
+  // Initializes font related params that depends on display
+  // configuration.
+  void InitFontParams();
+
   // True if the given |display| is currently connected.
   bool IsActiveDisplay(const gfx::Display& display) const;
 
   // True if there is an internal display.
   bool HasInternalDisplay() const;
 
   bool IsInternalDisplayId(int64 id) const;
 
   // Returns the display layout used for current displays.
   DisplayLayout GetCurrentDisplayLayout();
@@ skipping 239 matching lines @@
   SecondDisplayMode second_display_mode_;
   int64 mirrored_display_id_;
   gfx::Display non_desktop_display_;
 
   DISALLOW_COPY_AND_ASSIGN(DisplayManager);
 };
 
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_DISPLAY_MANAGER_H_