Supporting high dpi favicons in Instant Extended.

chrome/common/favicon_url_parser.h

+// Copyright 2013 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_COMMON_FAVICON_URL_PARSER_H_
+#define CHROME_COMMON_FAVICON_URL_PARSER_H_
+
+#include <string>
+
+#include "ui/base/layout.h"
+
+namespace chrome {
+
+struct ParsedFaviconPath {

[samarth, 2013/06/20 00:31:29]

Document the fields here, rather than below.

[pedro (no code reviews), 2013/06/20 22:43:45]

Done.

+  bool is_icon_url;
+  std::string url;
+  int size_in_dip;
+  ui::ScaleFactor scale_factor;
+  size_t path_index;
+};
+
+// Parses |path|, which should be in the format described at the top of the
+// file "chrome/browser/ui/webui/favicon_source.h". |icon_types| indicates
+// which icon types are supported. Returns true if |path| could be parsed.
+// The result of the parsing will be stored in a ParsedFaviconPath struct.
+//
+// This function will return a struct containing the following information:
+//
+//   is_icon_url - whether the URL has the "iconurl" parameter.
+//   url - the URL from which the favicon is being requested.
+//   size_in_dip - the size of the requested favicon
+//   scale_factor - the scale factor of the requested favicon
+//   path_index - the index of the first character (relative to the path)
+//                where the the URL from which the favicon is being requested
+//                is located.
+bool ParseFaviconPath(const std::string& path,
+                      int icon_types,
+                      ParsedFaviconPath* parsed);
+
+}  // namespace chrome
+
+#endif  // CHROME_COMMON_FAVICON_URL_PARSER_H_