Adds IDBKeyPath parser / extractor, and provides a mechanism to call it sandboxed.

chrome/utility/utility_thread.h

 // Copyright (c) 2009 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_UTILITY_UTILITY_THREAD_H_
 #define CHROME_UTILITY_UTILITY_THREAD_H_
 #pragma once
 
 #include <string>
 #include <vector>
 
 #include "base/platform_file.h"
 #include "chrome/common/child_thread.h"
 #include "printing/native_metafile.h"
 
 class GURL;
+class SerializedScriptValue;
 class SkBitmap;
 
 namespace gfx {
 class Rect;
 }  // namespace gfx
 
 namespace printing {
 struct PageRange;
 }  // namespace printing
 
@@ skipping 34 matching lines @@
   // |highest_rendered_page_number| is set to -1 on failure to render any page.
   bool RenderPDFToWinMetafile(
     base::PlatformFile pdf_file,
     const gfx::Rect& render_area,
     int render_dpi,
     const std::vector<printing::PageRange>& page_ranges,
     printing::NativeMetafile* metafile,
     int* highest_rendered_page_number);
 #endif   // defined(OS_WIN)
 
+  // IPC for extracting IDBKeys from SerializedScriptValues, used by IndexedDB.
+  void OnIDBKeysFromValuesAndKeyPath(
+      int id,
+      const std::vector<SerializedScriptValue>& serialized_script_values,
+      const string16& idb_key_path);
+
+  // IPC to notify we'll be running in batch mode instead of quitting after
+  // any of the IPCs above, we'll only quit during OnBatchModeFinished().
+  void OnBatchModeStarted();
+
+  // IPC to notify batch mode has finished and we should now quit.
+  void OnBatchModeFinished();
+
+  // Releases the process if we are not (or no longer) in batch mode.
+  void ReleaseProcessIfNeeded();
+
+  // True when we're running in batch mode.
+  bool batch_mode_;
+
   DISALLOW_COPY_AND_ASSIGN(UtilityThread);
 };
 
 #endif  // CHROME_UTILITY_UTILITY_THREAD_H_