Create an API around UtilityProcessHost and use that from chrome.

chrome/browser/importer/external_process_importer_client.h

 // 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.
 
 #ifndef CHROME_BROWSER_IMPORTER_EXTERNAL_PROCESS_IMPORTER_CLIENT_H_
 #define CHROME_BROWSER_IMPORTER_EXTERNAL_PROCESS_IMPORTER_CLIENT_H_
 #pragma once
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
+#include "base/memory/weak_ptr.h"
 #include "base/string16.h"
 #include "chrome/browser/importer/importer_data_types.h"
 #include "chrome/browser/importer/profile_writer.h"
-#include "content/browser/utility_process_host.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/browser/utility_process_host_client.h"
 
 class ExternalProcessImporterHost;
 class InProcessImporterBridge;
+
+namespace content {
 class UtilityProcessHost;
+}
 
 namespace history {
 class URLRow;
 struct ImportedFaviconUsage;
 }
 
 // This class is the client for the out of process profile importing.  It
 // collects notifications from this process host and feeds data back to the
 // importer host, who actually does the writing.
-class ExternalProcessImporterClient : public UtilityProcessHost::Client {
+class ExternalProcessImporterClient : public content::UtilityProcessHostClient {
  public:
   ExternalProcessImporterClient(ExternalProcessImporterHost* importer_host,
                                 const importer::SourceProfile& source_profile,
                                 uint16 items,
                                 InProcessImporterBridge* bridge);
   virtual ~ExternalProcessImporterClient();
 
   // Cancel import process on IO thread.
   void CancelImportProcessOnIOThread();
 
   // Report item completely downloaded on IO thread.
   void NotifyItemFinishedOnIOThread(importer::ImportItem import_item);
 
   // Notifies the importerhost that import has finished, and calls Release().
   void Cleanup();
 
   // Launches the task to start the external process.
   virtual void Start();
 
   // Creates a new UtilityProcessHost, which launches the import process.
   virtual void StartProcessOnIOThread(content::BrowserThread::ID thread_id);
 
   // Called by the ExternalProcessImporterHost on import cancel.
   virtual void Cancel();
 
-  // UtilityProcessHost::Client implementation:
+  // UtilityProcessHostClient implementation:
   virtual void OnProcessCrashed(int exit_code) OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   // Message handlers
   void OnImportStart();
   void OnImportFinished(bool succeeded, const std::string& error_msg);
   void OnImportItemStart(int item);
   void OnImportItemFinished(int item);
   void OnHistoryImportStart(size_t total_history_rows_count);
   void OnHistoryImportGroup(
@@ skipping 35 matching lines @@
 
   // Notifications received from the ProfileImportProcessHost are passed back
   // to process_importer_host_, which calls the ProfileWriter to record the
   // import data.  When the import process is done, process_importer_host_
   // deletes itself.
   ExternalProcessImporterHost* process_importer_host_;
 
   // Handles sending messages to the external process.  Deletes itself when
   // the external process dies (see
   // BrowserChildProcessHost::OnChildDisconnected).
-  base::WeakPtr<UtilityProcessHost> utility_process_host_;
+  base::WeakPtr<content::UtilityProcessHost> utility_process_host_;
 
   // Data to be passed from the importer host to the external importer.
   const importer::SourceProfile& source_profile_;
   uint16 items_;
 
   // Takes import data coming over IPC and delivers it to be written by the
   // ProfileWriter.  Released by ExternalProcessImporterClient in its
   // destructor.
   InProcessImporterBridge* bridge_;
 
   // True if import process has been cancelled.
   bool cancelled_;
 
   DISALLOW_COPY_AND_ASSIGN(ExternalProcessImporterClient);
 };
 
 #endif  // CHROME_BROWSER_IMPORTER_EXTERNAL_PROCESS_IMPORTER_CLIENT_H_