Non-web-accessible extension URLs should not load in non-extension processes

chrome/common/extensions/extension.h

 // Copyright (c) 2013 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_COMMON_EXTENSIONS_EXTENSION_H_
 #define CHROME_COMMON_EXTENSIONS_EXTENSION_H_
 
 #include <algorithm>
 #include <iosfwd>
 #include <map>
@@ skipping 33 matching lines @@
 
 namespace gfx {
 class ImageSkia;
 }
 
 namespace extensions {
 class APIPermissionSet;
 class PermissionSet;
 
 // Represents a Chrome extension.
+// Once created, an Extension object is immutable, with the exception of its
+// RuntimeData. This makes it safe to use on any thread, since access to the
+// RuntimeData is protected by a lock.
 class Extension : public base::RefCountedThreadSafe<Extension> {
  public:
   struct ManifestData;
 
   typedef std::vector<std::string> ScriptingWhitelist;
   typedef std::map<const std::string, linked_ptr<ManifestData> >
       ManifestDataMap;
 
   enum State {
     DISABLED = 0,
@@ skipping 672 matching lines @@
 
   UpdatedExtensionPermissionsInfo(
       const Extension* extension,
       const PermissionSet* permissions,
       Reason reason);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_COMMON_EXTENSIONS_EXTENSION_H_