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

chrome/common/utility_messages_internal.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.
 
 #include <string>
 #include <vector>
 
 // This header is meant to be included in multiple passes, hence no traditional
 // header guard. It is included by utility_messages_internal.h
 // See ipc_message_macros.h for explanation of the macros and passes.
@@ skipping 30 matching lines @@
   // Tell the utility process to decode the given image data.
   IPC_MESSAGE_CONTROL1(UtilityMsg_DecodeImage,
                        std::vector<unsigned char>)  // encoded image contents
 
   // Tell the utility process to render the given PDF into a metafile.
   IPC_MESSAGE_CONTROL4(UtilityMsg_RenderPDFPagesToMetafile,
                        base::PlatformFile,       // PDF file
                        gfx::Rect,                // Render Area
                        int,                      // DPI
                        std::vector<printing::PageRange>)
+
+  // Tell the utility process to extract the given IDBKeyPath from the
+  // SerializedScriptValue vector and reply with the corresponding IDBKeys.
+  IPC_MESSAGE_CONTROL3(UtilityMsg_IDBKeysFromValuesAndKeyPath,
+                       int,     // id
+                       std::vector<SerializedScriptValue>,
+                       string16) // IDBKeyPath
+
+  // Tells the utility process that it's running in batch mode.
+  IPC_MESSAGE_CONTROL0(UtilityMsg_BatchMode_Started)
+
+  // Tells the utility process that it can shutdown.
+  IPC_MESSAGE_CONTROL0(UtilityMsg_BatchMode_Finished)
+
 IPC_END_MESSAGES(Utility)
 
 //------------------------------------------------------------------------------
 // Utility process host messages:
 // These are messages from the utility process to the browser.
 IPC_BEGIN_MESSAGES(UtilityHost)
 
   // Reply when the utility process is done unpacking an extension.  |manifest|
   // is the parsed manifest.json file.
   // The unpacker should also have written out files containing the decoded
@@ skipping 43 matching lines @@
   // Reply when an error occured rendering the PDF.
   IPC_MESSAGE_CONTROL0(UtilityHostMsg_RenderPDFPagesToMetafile_Failed)
 
 #if defined(OS_WIN)
   // Request that the given font be loaded by the host so it's cached by the
   // OS. Please see ChildProcessHost::PreCacheFont for details.
   IPC_SYNC_MESSAGE_CONTROL1_0(UtilityHostMsg_PreCacheFont,
                               LOGFONT /* font data */)
 #endif  // defined(OS_WIN)
 
+  // Reply when the utility process has succeeded in obtaining the value for
+  // IDBKeyPath.
+  IPC_MESSAGE_CONTROL2(UtilityHostMsg_IDBKeysFromValuesAndKeyPath_Succeeded,
+                       int /* id */,
+                       std::vector<IndexedDBKey> /* value */)
+
+  // Reply when the utility process has failed in obtaining the value for
+  // IDBKeyPath.
+  IPC_MESSAGE_CONTROL1(UtilityHostMsg_IDBKeysFromValuesAndKeyPath_Failed,
+                       int /* id */)
+
 IPC_END_MESSAGES(UtilityHost)