Show modal dialog to tell users that the profile is managed when it's the case.

chrome/browser/extensions/api/developer_private/developer_private_api.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_API_DEVELOPER_PRIVATE_DEVELOPER_PRIVATE_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_DEVELOPER_PRIVATE_DEVELOPER_PRIVATE_API_H_
 
 #include "base/platform_file.h"
 #include "chrome/browser/extensions/api/developer_private/entry_picker.h"
 #include "chrome/browser/extensions/api/file_system/file_system_api.h"
@@ skipping 331 matching lines @@
    DECLARE_EXTENSION_FUNCTION("developerPrivate.getStrings",
                               DEVELOPERPRIVATE_GETSTRINGS);
 
   protected:
    virtual ~DeveloperPrivateGetStringsFunction();
 
    // ExtensionFunction
    virtual bool RunImpl() OVERRIDE;
 };
 
+class DeveloperPrivateIsProfileManagedFunction : public SyncExtensionFunction {
+  public:
+   DECLARE_EXTENSION_FUNCTION("developerPrivate.isProfileManaged",
+                              DEVELOPERPRIVATE_ISPROFILEMANAGED);
+
+  protected:
+   virtual ~DeveloperPrivateIsProfileManagedFunction();
+
+   // ExtensionFunction
+   virtual bool RunImpl() OVERRIDE;
+};
+
 class DeveloperPrivateExportSyncfsFolderToLocalfsFunction
     : public AsyncExtensionFunction {
   public:
    DECLARE_EXTENSION_FUNCTION("developerPrivate.exportSyncfsFolderToLocalfs",
                               DEVELOPERPRIVATE_LOADUNPACKEDCROS);
 
    DeveloperPrivateExportSyncfsFolderToLocalfsFunction();
 
   protected:
    virtual ~DeveloperPrivateExportSyncfsFolderToLocalfsFunction();
@@ skipping 48 matching lines @@
 
    void GetUnpackedExtension(const base::FilePath& path,
                              const ExtensionSet* extensions);
 };
 
 }  // namespace api
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_DEVELOPER_PRIVATE_DEVELOPER_PRIVATE_API_H_