Don't derive from ChromeURLDataManager::DataSource, and instead have these classes implement a dele…

chrome/browser/ui/webui/shared_resources_data_source.cc

 // Copyright (c) 2012 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/shared_resources_data_source.h"
 
 #include <string>
 
 #include "base/memory/ref_counted_memory.h"
 #include "base/memory/singleton.h"
@@ skipping 23 matching lines @@
       idr = kSharedResources[i].value;
       break;
     }
   }
 
   return idr;
 }
 
 }  // namespace
 
-SharedResourcesDataSource::SharedResourcesDataSource()
-    : DataSource(chrome::kChromeUIResourcesHost, NULL) {
+SharedResourcesDataSource::SharedResourcesDataSource() {
 }
 
 SharedResourcesDataSource::~SharedResourcesDataSource() {
 }
 
+std::string SharedResourcesDataSource::GetSource() {
+  return chrome::kChromeUIResourcesHost;
+}
+
 void SharedResourcesDataSource::StartDataRequest(const std::string& path,
                                                  bool is_incognito,
                                                  int request_id) {
   int idr = PathToIDR(path);
   DCHECK_NE(-1, idr) << " path: " << path;
   const ResourceBundle& rb = ResourceBundle::GetSharedInstance();
   scoped_refptr<base::RefCountedStaticMemory> bytes(
       rb.LoadDataResourceBytes(idr));
 
-  SendResponse(request_id, bytes);
+  url_data_source()->SendResponse(request_id, bytes);
 }
 
 std::string SharedResourcesDataSource::GetMimeType(
     const std::string& path) const {
   // Requests should not block on the disk!  On Windows this goes to the
   // registry.
   //   http://code.google.com/p/chromium/issues/detail?id=59849
   base::ThreadRestrictions::ScopedAllowIO allow_io;
 
   std::string mime_type;
   net::GetMimeTypeFromFile(FilePath().AppendASCII(path), &mime_type);
   return mime_type;
 }