Introduce dedicated enum value for icons from Web Manifests

ios/web/public/favicon_url.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 IOS_WEB_PUBLIC_FAVICON_URL_H_
 #define IOS_WEB_PUBLIC_FAVICON_URL_H_
 
 #include <vector>
 
 #include "ui/gfx/geometry/size.h"
 #include "url/gurl.h"
 
 namespace web {
 
 // The favicon url from the render.
 struct FaviconURL {
   // The icon type in a page. The definition must be same as
   // favicon_base::IconType.
   enum IconType {
     INVALID_ICON = 0x0,
     FAVICON = 1 << 0,
     TOUCH_ICON = 1 << 1,
-    TOUCH_PRECOMPOSED_ICON = 1 << 2
+    TOUCH_PRECOMPOSED_ICON = 1 << 2,
+    WEB_MANIFEST_ICON = 1 << 3

[Eugene But (OOO till 7-30), 2017/05/19 14:21:31]

nit: Do you want to add comma after the last item, so next time we don't have to
touch it?

[mastiz, 2017/05/25 11:14:16]

Done.

   };
 
   FaviconURL();
   FaviconURL(const GURL& url,
              IconType type,
              const std::vector<gfx::Size>& sizes);
   FaviconURL(const FaviconURL& other);
   ~FaviconURL();
 
   // The url of the icon.
   GURL icon_url;
 
   // The type of the icon
   IconType icon_type;
 
   // Icon's bitmaps' size
   std::vector<gfx::Size> icon_sizes;
 };
 
 } // namespace web
 
 #endif  // IOS_WEB_PUBLIC_FAVICON_URL_H_