Correctly handle extension reloading in the task manager....

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 20 matching lines @@
     return InstallOrUpdateExtension("", path, expected_change);
   }
 
   // Same as above but calls ExtensionsService::UpdateExtension instead of
   // InstallExtension().
   bool UpdateExtension(const std::string& id, const FilePath& path,
                        int expected_change) {
     return InstallOrUpdateExtension(id, path, expected_change);
   }
 
+  void ReloadExtension(const std::string& extension_id);
+
   void UnloadExtension(const std::string& extension_id);
 
   void UninstallExtension(const std::string& extension_id);
 
   // Wait for the total number of page actions to change to |count|.
   bool WaitForPageActionCountChangeTo(int count);
 
   // Wait for the number of visible page actions to change to |count|.
   bool WaitForPageActionVisibilityChangeTo(int count);
 
@@ skipping 17 matching lines @@
   int extension_installs_observed_;
 
  private:
   bool InstallOrUpdateExtension(const std::string& id, const FilePath& path,
                                 int expected_change);
 
   bool WaitForExtensionHostsToLoad();
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_BROWSERTEST_H_