Move chooser_controller directory from //components to //chrome/browser

components/chooser_controller/mock_chooser_controller.cc

-// Copyright 2016 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 "components/chooser_controller/mock_chooser_controller.h"
-
-MockChooserController::MockChooserController(content::RenderFrameHost* owner)
-    : ChooserController(owner) {}
-
-MockChooserController::~MockChooserController() {}
-
-size_t MockChooserController::NumOptions() const {
-  return option_names_.size();
-}
-
-base::string16 MockChooserController::GetOption(size_t index) const {
-  return option_names_[index];
-}
-
-void MockChooserController::OptionAdded(const base::string16 option_name) {
-  option_names_.push_back(option_name);
-  if (observer())
-    observer()->OnOptionAdded(option_names_.size() - 1);
-}
-
-void MockChooserController::OptionRemoved(const base::string16 option_name) {
-  for (auto it = option_names_.begin(); it != option_names_.end(); ++it) {
-    if (*it == option_name) {
-      size_t index = it - option_names_.begin();
-      option_names_.erase(it);
-      if (observer())
-        observer()->OnOptionRemoved(index);
-      return;
-    }
-  }
-}