Update {virtual,override} to follow C++11 style in extensions.

extensions/common/permissions/set_disjunction_permission.h

 // Copyright 2014 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 EXTENSIONS_COMMON_PERMISSIONS_SET_DISJUNCTION_PERMISSION_H_
 #define EXTENSIONS_COMMON_PERMISSIONS_SET_DISJUNCTION_PERMISSION_H_
 
 #include <set>
 #include <string>
 
@@ skipping 13 matching lines @@
 // APIPermission::CheckParam matches any of the conditions in the set, the
 // permission is granted.
 //
 // For an example of how to use this class, see SocketPermission.
 template <class PermissionDataType, class DerivedType>
 class SetDisjunctionPermission : public APIPermission {
  public:
   explicit SetDisjunctionPermission(const APIPermissionInfo* info)
       : APIPermission(info) {}
 
-  ~SetDisjunctionPermission() {}
+  ~SetDisjunctionPermission() override {}
 
   // APIPermission overrides
-  virtual bool HasMessages() const override { return !data_set_.empty(); }
+  bool HasMessages() const override { return !data_set_.empty(); }
 
-  virtual bool Check(const APIPermission::CheckParam* param) const override {
+  bool Check(const APIPermission::CheckParam* param) const override {
     for (typename std::set<PermissionDataType>::const_iterator i =
              data_set_.begin();
          i != data_set_.end();
          ++i) {
       if (i->Check(param))
         return true;
     }
     return false;
   }
 
-  virtual bool Contains(const APIPermission* rhs) const override {
+  bool Contains(const APIPermission* rhs) const override {
     CHECK(rhs->info() == info());
     const SetDisjunctionPermission* perm =
         static_cast<const SetDisjunctionPermission*>(rhs);
     return base::STLIncludes<std::set<PermissionDataType> >(
         data_set_, perm->data_set_);
   }
 
-  virtual bool Equal(const APIPermission* rhs) const override {
+  bool Equal(const APIPermission* rhs) const override {
     CHECK(rhs->info() == info());
     const SetDisjunctionPermission* perm =
         static_cast<const SetDisjunctionPermission*>(rhs);
     return data_set_ == perm->data_set_;
   }
 
-  virtual APIPermission* Clone() const override {
+  APIPermission* Clone() const override {
     SetDisjunctionPermission* result = new DerivedType(info());
     result->data_set_ = data_set_;
     return result;
   }
 
-  virtual APIPermission* Diff(const APIPermission* rhs) const override {
+  APIPermission* Diff(const APIPermission* rhs) const override {
     CHECK(rhs->info() == info());
     const SetDisjunctionPermission* perm =
         static_cast<const SetDisjunctionPermission*>(rhs);
     scoped_ptr<SetDisjunctionPermission> result(new DerivedType(info()));
     result->data_set_ = base::STLSetDifference<std::set<PermissionDataType> >(
         data_set_, perm->data_set_);
     return result->data_set_.empty() ? NULL : result.release();
   }
 
-  virtual APIPermission* Union(const APIPermission* rhs) const override {
+  APIPermission* Union(const APIPermission* rhs) const override {
     CHECK(rhs->info() == info());
     const SetDisjunctionPermission* perm =
         static_cast<const SetDisjunctionPermission*>(rhs);
     scoped_ptr<SetDisjunctionPermission> result(new DerivedType(info()));
     result->data_set_ = base::STLSetUnion<std::set<PermissionDataType> >(
         data_set_, perm->data_set_);
     return result.release();
   }
 
-  virtual APIPermission* Intersect(const APIPermission* rhs) const override {
+  APIPermission* Intersect(const APIPermission* rhs) const override {
     CHECK(rhs->info() == info());
     const SetDisjunctionPermission* perm =
         static_cast<const SetDisjunctionPermission*>(rhs);
     scoped_ptr<SetDisjunctionPermission> result(new DerivedType(info()));
     result->data_set_ = base::STLSetIntersection<std::set<PermissionDataType> >(
         data_set_, perm->data_set_);
     return result->data_set_.empty() ? NULL : result.release();
   }
 
-  virtual bool FromValue(
+  bool FromValue(
       const base::Value* value,
       std::string* error,
       std::vector<std::string>* unhandled_permissions) override {
     data_set_.clear();
     const base::ListValue* list = NULL;
 
     if (!value || !value->GetAsList(&list) || list->GetSize() == 0) {
       if (error)
         *error = "NULL or empty permission list";
       return false;
@@ skipping 18 matching lines @@
             *error = "Cannot parse an item from the permission list: " +
                      unknown_permission;
           }
           return false;
         }
       }
     }
     return true;
   }
 
-  virtual scoped_ptr<base::Value> ToValue() const override {
+  scoped_ptr<base::Value> ToValue() const override {
     base::ListValue* list = new base::ListValue();
     typename std::set<PermissionDataType>::const_iterator i;
     for (i = data_set_.begin(); i != data_set_.end(); ++i) {
       scoped_ptr<base::Value> item_value(i->ToValue());
       list->Append(item_value.release());
     }
     return scoped_ptr<base::Value>(list);
   }
 
-  virtual void Write(IPC::Message* m) const override {
+  void Write(IPC::Message* m) const override {
     IPC::WriteParam(m, data_set_);
   }
 
-  virtual bool Read(const IPC::Message* m, PickleIterator* iter) override {
+  bool Read(const IPC::Message* m, PickleIterator* iter) override {
     return IPC::ReadParam(m, iter, &data_set_);
   }
 
-  virtual void Log(std::string* log) const override {
+  void Log(std::string* log) const override {
     IPC::LogParam(data_set_, log);
   }
 
  protected:
   std::set<PermissionDataType> data_set_;
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_COMMON_PERMISSIONS_SET_DISJUNCTION_PERMISSION_H_