Disable modifying extensions when in managed mode.

chrome/browser/extensions/test_management_policy.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_EXTENSIONS_TEST_MANAGEMENT_POLICY_H_
 #define CHROME_BROWSER_EXTENSIONS_TEST_MANAGEMENT_POLICY_H_
 #pragma once
 
 #include <string>
 
@@ skipping 14 matching lines @@
 
   static std::string expected_error() {
     return "Action prohibited by test provider.";
   }
 
   TestManagementPolicyProvider();
   explicit TestManagementPolicyProvider(int prohibited_actions);
 
   void SetProhibitedActions(int prohibited_actions);
 
-  virtual std::string GetPolicyProviderName() const OVERRIDE;
+  virtual std::string GetDebugPolicyProviderName() const OVERRIDE;
 
   virtual bool UserMayLoad(const Extension* extension,
                            string16* error) const OVERRIDE;
 
   virtual bool UserMayModifySettings(const Extension* extension,
                                      string16* error) const OVERRIDE;
 
   virtual bool MustRemainEnabled(const Extension* extension,
                                  string16* error) const OVERRIDE;
 
  private:
   bool may_load_;
   bool may_modify_status_;
   bool must_remain_enabled_;
 
   string16 error_message_;
 };
 }  // namespace
 #endif  // CHROME_BROWSER_EXTENSIONS_TEST_MANAGEMENT_POLICY_H_