Revise about: and chrome: url handling.

chrome/browser/ui/webui/web_ui_util.cc

 // Copyright (c) 2011 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.
 
 #include "chrome/browser/ui/webui/web_ui_util.h"
 
 #include <vector>
 
 #include "base/base64.h"
-#include "base/string_util.h"
-#include "chrome/common/url_constants.h"
-#include "googleurl/src/gurl.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/codec/png_codec.h"
 
 namespace web_ui_util {
 
 std::string GetImageDataUrl(const SkBitmap& bitmap) {
   std::vector<unsigned char> output;
   gfx::PNGCodec::EncodeBGRASkBitmap(bitmap, false, &output);
   std::string str_url;
   str_url.insert(str_url.end(), output.begin(), output.end());
@@ skipping 12 matching lines @@
   scoped_refptr<RefCountedMemory> raw_icon(icon_data);
   std::string str_url;
   str_url.insert(str_url.end(),
     raw_icon->front(),
     raw_icon->front() + raw_icon->size());
   base::Base64Encode(str_url, &str_url);
   str_url.insert(0, "data:image/png;base64,");
   return str_url;
 }
 
-bool ChromeURLHostEquals(const GURL& url, const char* host) {
-  return (url.SchemeIs(chrome::kChromeUIScheme) ||
-          url.SchemeIs(chrome::kAboutScheme)) &&
-         LowerCaseEqualsASCII(url.host(), host);
-}
-
 }  // namespace web_ui_util