Add ability to store hidpi theme images in data pack

chrome/browser/themes/theme_service.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 CHROME_BROWSER_THEMES_THEME_SERVICE_H_
 #define CHROME_BROWSER_THEMES_THEME_SERVICE_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 150 matching lines @@
   // theme properties out of the theme provider since it's cross platform.
   virtual const gfx::Image* GetImageNamed(int id) const;
 
   // Overridden from ui::ThemeProvider:
   virtual SkBitmap* GetBitmapNamed(int id) const OVERRIDE;
   virtual gfx::ImageSkia* GetImageSkiaNamed(int id) const OVERRIDE;
   virtual SkColor GetColor(int id) const OVERRIDE;
   virtual bool GetDisplayProperty(int id, int* result) const OVERRIDE;
   virtual bool ShouldUseNativeFrame() const OVERRIDE;
   virtual bool HasCustomImage(int id) const OVERRIDE;
-  virtual base::RefCountedMemory* GetRawData(int id) const OVERRIDE;
+  virtual base::RefCountedMemory* GetRawData(
+      int id,
+      ui::ScaleFactor scale_factor) const OVERRIDE;
 #if defined(OS_MACOSX)
   virtual NSImage* GetNSImageNamed(int id, bool allow_default) const OVERRIDE;
   virtual NSColor* GetNSImageColorNamed(int id,
                                         bool allow_default) const OVERRIDE;
   virtual NSColor* GetNSColor(int id, bool allow_default) const OVERRIDE;
   virtual NSColor* GetNSColorTint(int id, bool allow_default) const OVERRIDE;
   virtual NSGradient* GetNSGradient(int id) const OVERRIDE;
 #elif defined(OS_POSIX) && !defined(TOOLKIT_VIEWS) && !defined(OS_ANDROID)
   // This mismatch between what this class defines and whether or not it
   // overrides ui::ThemeProvider is http://crbug.com/105040 .
@@ skipping 135 matching lines @@
 
   // The number of infobars currently displayed.
   int number_of_infobars_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(ThemeService);
 };
 
 #endif  // CHROME_BROWSER_THEMES_THEME_SERVICE_H_