Generate IDs for --load-extension by hashing the path instead

chrome/browser/extensions/extension_browsertest.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_BROWSER_EXTENSIONS_EXTENSION_BROWSERTEST_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_BROWSERTEST_H_
 
 #include <string>
 
 #include "base/command_line.h"
@@ skipping 38 matching lines @@
   bool WaitForPageActionVisibilityChangeTo(int count);
 
   // NotificationObserver
   virtual void Observe(NotificationType type,
                        const NotificationSource& source,
                        const NotificationDetails& details);
 
   bool loaded_;
   bool installed_;
   FilePath test_data_dir_;
+  std::string last_loaded_extension_id_;
 
  private:
   bool InstallOrUpdateExtension(const std::string& id, const FilePath& path,
                                 int expected_change);
 
   bool WaitForExtensionHostsToLoad();
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_BROWSERTEST_H_