Remove all the swap() stuff in the PPAPI C++ wrappers....

ppapi/cpp/dev/file_chooser_dev.cc

 // Copyright (c) 2010 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.
 
 #include "ppapi/cpp/dev/file_chooser_dev.h"
 
 #include "ppapi/c/dev/ppb_file_chooser_dev.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/cpp/completion_callback.h"
 #include "ppapi/cpp/dev/file_ref_dev.h"
@@ skipping 15 matching lines @@
     return;
   PassRefFromConstructor(file_chooser_f->Create(instance.pp_instance(),
                                                 &options));
 }
 
 FileChooser_Dev::FileChooser_Dev(const FileChooser_Dev& other)
     : Resource(other) {
 }
 
 FileChooser_Dev& FileChooser_Dev::operator=(const FileChooser_Dev& other) {
-  FileChooser_Dev copy(other);
-  swap(copy);
+  Resource::operator=(other);
   return *this;
 }
 
-void FileChooser_Dev::swap(FileChooser_Dev& other) {
-  Resource::swap(other);
-}
 
 int32_t FileChooser_Dev::Show(const CompletionCallback& cc) {
   if (!file_chooser_f)
     return PP_ERROR_NOINTERFACE;
   return file_chooser_f->Show(pp_resource(), cc.pp_completion_callback());
 }
 
 FileRef_Dev FileChooser_Dev::GetNextChosenFile() const {
   if (!file_chooser_f)
     return FileRef_Dev();
   return FileRef_Dev(FileRef_Dev::PassRef(),
                  file_chooser_f->GetNextChosenFile(pp_resource()));
 }
 
 }  // namespace pp