Add FileSystemMountPointProvider::CreateFileReader() which returns appropriate Reader instance

webkit/fileapi/sandbox_mount_point_provider.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 "webkit/fileapi/sandbox_mount_point_provider.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/message_loop_proxy.h"
 #include "base/rand_util.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
 #include "base/metrics/histogram.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/net_util.h"
+#include "webkit/fileapi/file_system_file_reader.h"
 #include "webkit/fileapi/file_system_operation.h"
 #include "webkit/fileapi/file_system_operation_context.h"
 #include "webkit/fileapi/file_system_options.h"
 #include "webkit/fileapi/file_system_types.h"
 #include "webkit/fileapi/file_system_usage_cache.h"
 #include "webkit/fileapi/file_system_util.h"
 #include "webkit/fileapi/obfuscated_file_util.h"
 #include "webkit/fileapi/quota_file_util.h"
 #include "webkit/glue/webkit_glue.h"
 #include "webkit/quota/quota_manager.h"
@@ skipping 397 matching lines @@
 FileSystemOperationInterface*
 SandboxMountPointProvider::CreateFileSystemOperation(
     const GURL& origin_url,
     FileSystemType file_system_type,
     const FilePath& virtual_path,
     base::MessageLoopProxy* file_proxy,
     FileSystemContext* context) const {
   return new FileSystemOperation(file_proxy, context);
 }
 
+webkit_blob::FileReader* SandboxMountPointProvider::CreateFileReader(
+    const GURL& url,
+    int64 offset,
+    base::MessageLoopProxy* file_proxy,
+    FileSystemContext* context) const {
+  return new FileSystemFileReader(file_proxy, context, url, offset);
+}
+
 FilePath SandboxMountPointProvider::old_base_path() const {
   return profile_path_.Append(kOldFileSystemDirectory);
 }
 
 FilePath SandboxMountPointProvider::new_base_path() const {
   return profile_path_.Append(kNewFileSystemDirectory);
 }
 
 FilePath SandboxMountPointProvider::renamed_old_base_path() const {
   return profile_path_.Append(kRenamedOldFileSystemDirectory);
@@ skipping 215 matching lines @@
        i < file_system_options_.additional_allowed_schemes().size();
        ++i) {
     if (url.SchemeIs(
             file_system_options_.additional_allowed_schemes()[i].c_str()))
       return true;
   }
   return false;
 }
 
 }  // namespace fileapi