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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_BROWSER_UI_WEBUI_THEME_SOURCE_H_
      6 #define CHROME_BROWSER_UI_WEBUI_THEME_SOURCE_H_
      7 
      8 #include <string>
      9 
     10 #include "base/compiler_specific.h"
     11 #include "base/memory/ref_counted.h"
     12 #include "content/public/browser/url_data_source.h"
     13 #include "ui/base/layout.h"
     14 
     15 class Profile;
     16 
     17 namespace base {
     18 class RefCountedMemory;
     19 }
     20 
     21 class ThemeSource : public content::URLDataSource {
     22  public:
     23   explicit ThemeSource(Profile* profile);
     24   virtual ~ThemeSource();
     25 
     26   // content::URLDataSource implementation.
     27   virtual std::string GetSource() const OVERRIDE;
     28   virtual void StartDataRequest(
     29       const std::string& path,
     30       int render_process_id,
     31       int render_view_id,
     32       const content::URLDataSource::GotDataCallback& callback) OVERRIDE;
     33   virtual std::string GetMimeType(const std::string& path) const OVERRIDE;
     34   virtual base::MessageLoop* MessageLoopForRequestPath(
     35       const std::string& path) const OVERRIDE;
     36   virtual bool ShouldReplaceExistingSource() const OVERRIDE;
     37   virtual bool ShouldServiceRequest(
     38       const net::URLRequest* request) const OVERRIDE;
     39 
     40  private:
     41   // Fetch and send the theme bitmap.
     42   void SendThemeBitmap(
     43       const content::URLDataSource::GotDataCallback& callback,
     44       int resource_id,
     45       ui::ScaleFactor scale_factor);
     46 
     47   // The original profile (never an OTR profile).
     48   Profile* profile_;
     49 
     50   // We grab the CSS early so we don't have to go back to the UI thread later.
     51   scoped_refptr<base::RefCountedMemory> css_bytes_;
     52 
     53   DISALLOW_COPY_AND_ASSIGN(ThemeSource);
     54 };
     55 
     56 #endif  // CHROME_BROWSER_UI_WEBUI_THEME_SOURCE_H_
     57