Move UtilityProcessHost to content and move the message sending/dispatching to the clients. This...

chrome/utility/utility_thread.h

-// 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.
-
-#ifndef CHROME_UTILITY_UTILITY_THREAD_H_
-#define CHROME_UTILITY_UTILITY_THREAD_H_
-#pragma once
-
-#include <string>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/string16.h"
-#include "base/platform_file.h"
-#include "content/common/child_thread.h"
-
-class FilePath;
-class IndexedDBKey;
-class SerializedScriptValue;
-
-namespace gfx {
-class Rect;
-}
-
-namespace IPC {
-class Message;
-}
-
-namespace printing {
-struct PageRange;
-}
-
-// This class represents the background thread where the utility task runs.
-class UtilityThread : public ChildThread {
- public:
-  UtilityThread();
-  virtual ~UtilityThread();
-
-  // Returns the one utility thread.
-  static UtilityThread* current() {
-    return static_cast<UtilityThread*>(ChildThread::current());
-  }
-
- private:
-  // IPC messages
-  virtual bool OnControlMessageReceived(const IPC::Message& msg);
-  void OnUnpackExtension(const FilePath& extension_path);
-
-  // IPC messages for web resource service.
-  void OnUnpackWebResource(const std::string& resource_data);
-
-  // IPC for parsing an extensions auto-update manifest xml file.
-  void OnParseUpdateManifest(const std::string& xml);
-
-  // IPC for decoding an image.
-  void OnDecodeImage(const std::vector<unsigned char>& encoded_data);
-
-  // IPC for decoding an image which is base64 encoded.
-  void OnDecodeImageBase64(const std::string& encoded_data);
-
-  // IPC to render a PDF into a platform metafile.
-  void OnRenderPDFPagesToMetafile(
-      base::PlatformFile pdf_file,
-      const FilePath& metafile_path,
-      const gfx::Rect& render_area,
-      int render_dpi,
-      const std::vector<printing::PageRange>& page_ranges);
-
-#if defined(OS_WIN)
-  // Helper method for Windows.
-  // |highest_rendered_page_number| is set to -1 on failure to render any page.
-  bool RenderPDFToWinMetafile(
-    base::PlatformFile pdf_file,
-    const FilePath& metafile_path,
-    const gfx::Rect& render_area,
-    int render_dpi,
-    const std::vector<printing::PageRange>& page_ranges,
-    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 for injecting an IndexedDB key into a SerializedScriptValue.
-  void OnInjectIDBKey(const IndexedDBKey& key,
-                      const SerializedScriptValue& value,
-                      const string16& key_path);
-
-  // IPC for parsing a string of JSON into a Value.
-  void OnParseJSON(const std::string& json);
-
-  // 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();
-
-  // IPC to get capabilities and defaults for the specified
-  // printer. Used on Windows to isolate the service process from printer driver
-  // crashes by executing this in a separate process. This does not run in a
-  // sandbox.
-  void OnGetPrinterCapsAndDefaults(const std::string& printer_name);
-
-  // 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_