Implement new bookmark app icon generation.

chrome/browser/extensions/bookmark_app_helper.h

 // Copyright 2014 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_EXTENSIONS_BOOKMARK_APP_HELPER_H_
 #define CHROME_BROWSER_EXTENSIONS_BOOKMARK_APP_HELPER_H_
 
 #include <map>
 #include <set>
 #include <vector>
@@ skipping 34 matching lines @@
 
   // This finds the closest not-smaller bitmap in |bitmaps| for each size in
   // |sizes| and resizes it to that size. This returns a map of sizes to bitmaps
   // which contains only bitmaps of a size in |sizes| and at most one bitmap of
   // each size.
   static std::map<int, SkBitmap> ConstrainBitmapsToSizes(
       const std::vector<SkBitmap>& bitmaps,
       const std::set<int>& sizes);
 
   // Adds a square container icon of |output_size| pixels to |bitmaps| by
-  // centering the biggest smaller icon in |bitmaps| and drawing a rounded
-  // rectangle with strip of the that icon's dominant color at the bottom.
+  // drawing the given |letter| into a rounded background of |color|.
   // Does nothing if an icon of |output_size| already exists in |bitmaps|.
-  static void GenerateContainerIcon(std::map<int, SkBitmap>* bitmaps,
-                                    int output_size);
+  static void GenerateIcon(std::map<int, SkBitmap>* bitmaps,
+                           int output_size,
+                           SkColor color,
+                           char letter);
 
   // Begins the asynchronous bookmark app creation.
   void Create(const CreateBookmarkAppCallback& callback);
 
  private:
   friend class TestBookmarkAppHelper;
 
   // Performs post icon download tasks including installing the bookmark app.
   void OnIconsDownloaded(bool success,
                          const std::map<GURL, std::vector<SkBitmap> >& bitmaps);
@@ skipping 32 matching lines @@
     content::BrowserContext* browser_context,
     const extensions::Extension* extension,
     const base::Callback<void(const WebApplicationInfo&)> callback);
 
 // Returns whether the given |url| is a valid bookmark app url.
 bool IsValidBookmarkAppUrl(const GURL& url);
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_BOOKMARK_APP_HELPER_H_