Add support for multiple icon sizes for Mac platform apps

chrome/browser/shell_integration.h

Index: chrome/browser/shell_integration.h
diff --git a/chrome/browser/shell_integration.h b/chrome/browser/shell_integration.h
index 84372273db1bd5416eb88534e8d5b3e89bcfe662..dad4d5d88d7de9df0937f6250c49cdfde515d8c5 100644
--- a/chrome/browser/shell_integration.h
+++ b/chrome/browser/shell_integration.h
@@ -14,6 +14,7 @@
 #include "base/string16.h"
 #include "googleurl/src/gurl.h"
 #include "third_party/skia/include/core/SkBitmap.h"
+#include "ui/gfx/image/image.h"
 
 class CommandLine;
 class FilePath;
@@ -78,7 +79,7 @@ class ShellIntegration {
     string16 title;
     string16 description;
     FilePath extension_path;
-    SkBitmap favicon;
+    gfx::Image favicon;
 
     bool create_on_desktop;
     bool create_in_applications_menu;