Allow extension APIs to be called from WebUI.

content/public/browser/child_process_security_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 CONTENT_PUBLIC_BROWSER_CHILD_PROCESS_SECURITY_POLICY_H_
 #define CONTENT_PUBLIC_BROWSER_CHILD_PROCESS_SECURITY_POLICY_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 127 matching lines @@
   virtual bool CanReadWriteFileSystem(int child_id,
                                       const std::string& filesystem_id) = 0;
 
   // Returns true if copy-into access has been granted to |filesystem_id|.
   virtual bool CanCopyIntoFileSystem(int child_id,
                                      const std::string& filesystem_id) = 0;
 
   // Returns true if delete-from access has been granted to |filesystem_id|.
   virtual bool CanDeleteFromFileSystem(int child_id,
                                        const std::string& filesystem_id) = 0;
+
+  // Returns true if the specified child_id has been granted WebUIBindings.
+  // The browser should check this property before assuming the child process is
+  // allowed to use WebUIBindings.
+  virtual bool HasWebUIBindings(int child_id) = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_CHILD_PROCESS_SECURITY_POLICY_H_