Remove screen dependency from font_render_params_linux

ui/gfx/platform_font_linux.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 UI_GFX_PLATFORM_FONT_LINUX_H_
 #define UI_GFX_PLATFORM_FONT_LINUX_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 66 matching lines @@
   // Computes the metrics if they have not yet been computed.
   void ComputeMetricsIfNecessary();
 
   skia::RefPtr<SkTypeface> typeface_;
 
   // Additional information about the face.
   // Skia actually expects a family name and not a font name.
   std::string font_family_;
   int font_size_pixels_;
   int style_;
-#if defined(OS_CHROMEOS)
   float device_scale_factor_;
-#endif
 
   // Information describing how the font should be rendered.
   FontRenderParams font_render_params_;
 
   // Cached metrics, generated on demand.
   bool metrics_need_computation_ = true;
   int ascent_pixels_;
   int height_pixels_;
   int cap_height_pixels_;
   double average_width_pixels_;
 
 #if defined(OS_CHROMEOS)
   // A font description string of the format used by gfx::FontList.
   static std::string* default_font_description_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(PlatformFontLinux);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_PLATFORM_FONT_LINUX_H_