[Icons NTP] Working prototype to fetch, store, and display big icons.

chrome/common/favicon/fallback_icon_url_parser.h

 // Copyright 2015 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_FALLBACK_ICON_URL_PARSER_H_
 #define CHROME_COMMON_FAVICON_FALLBACK_ICON_URL_PARSER_H_
 
 #include <string>
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "components/favicon_base/fallback_icon_style.h"
 #include "third_party/skia/include/core/SkColor.h"
-#include "url/gurl.h"
 
 namespace chrome {
 
 class ParsedFallbackIconPath {
  public:
   ParsedFallbackIconPath();
   ~ParsedFallbackIconPath();
 
-  const GURL& url() const { return url_; }
+  const std::string& url_string() const { return url_string_; }
 
   int size_in_pixels() const { return size_in_pixels_; }
 
   const favicon_base::FallbackIconStyle& style() const { return style_; }
 
+  size_t path_index() const { return path_index_; }
+
   // Parses |path|, which should be in the format described at the top of the
   // file "chrome/browser/ui/webui/fallback_icon_source.h".
   bool Parse(const std::string& path);
 
  private:
   // Parses |specs_str|, which should be the comma-separated value portion
   // in the format described at the top of the file
   // "chrome/browser/ui/webui/fallback_icon_source.h".
   static bool ParseSpecs(const std::string& specs_str,
                          int *size,
                          favicon_base::FallbackIconStyle* style);
 
   // Helper to parse color string (e.g., "red", "#f00", "#aB0137"). On success,
   // returns true and writes te result to |*color|.
   static bool ParseColor(const std::string& color_str, SkColor* color);
 
   friend class FallbackIconUrlParserTest;
   FRIEND_TEST_ALL_PREFIXES(FallbackIconUrlParserTest, ParseColorSuccess);
   FRIEND_TEST_ALL_PREFIXES(FallbackIconUrlParserTest, ParseColorFailure);
   FRIEND_TEST_ALL_PREFIXES(FallbackIconUrlParserTest, ParseSpecsEmpty);
   FRIEND_TEST_ALL_PREFIXES(FallbackIconUrlParserTest, ParseSpecsPartial);
   FRIEND_TEST_ALL_PREFIXES(FallbackIconUrlParserTest, ParseSpecsFull);
   FRIEND_TEST_ALL_PREFIXES(FallbackIconUrlParserTest, ParseSpecsFailure);
 
-  // The page URL the fallback icon is requested for.
-  GURL url_;
+  // The page URL string the fallback icon is requested for.
+  std::string url_string_;
 
   // The size of the requested fallback icon in pixels.
   int size_in_pixels_;
 
   // Styling specifications of fallback icon.
   favicon_base::FallbackIconStyle style_;
 
+  // The index of the first character (relative to the path) where the the URL
+  // from which the fallback icon is being requested is located.
+  size_t path_index_;
+
   DISALLOW_COPY_AND_ASSIGN(ParsedFallbackIconPath);
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_COMMON_FAVICON_FALLBACK_ICON_URL_PARSER_H_