Replace unique_ptr.reset(other_unique_ptr.release()) with std::move() in chrome/browser

chrome/browser/ui/cocoa/constrained_window/constrained_window_mac.mm

 // 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.
 
 #include "chrome/browser/ui/cocoa/constrained_window/constrained_window_mac.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/logging.h"
@@ skipping 41 matching lines @@
 }
 
 ConstrainedWindowMac::~ConstrainedWindowMac() {
   CHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
   native_manager_.reset();
   DCHECK(!manager_);
 }
 
 void ConstrainedWindowMac::ShowWebContentsModalDialog() {
   std::unique_ptr<SingleWebContentsDialogManagerCocoa> dialog_manager;
-  dialog_manager.reset(native_manager_.release());
+  dialog_manager = std::move(native_manager_);
   GetDialogManager()->ShowDialogWithManager(
       [sheet_.get() sheetWindow], std::move(dialog_manager));
 }
 
 void ConstrainedWindowMac::CloseWebContentsModalDialog() {
   if (manager_)
     manager_->Close();
 }
 
 void ConstrainedWindowMac::OnDialogClosing() {
@@ skipping 10 matching lines @@
   DCHECK(web_contents_);
   WebContentsModalDialogManager* dialog_manager =
       WebContentsModalDialogManager::FromWebContents(web_contents_);
   // If WebContentsModalDialogManager::CreateForWebContents(web_contents_) was
   // never called, then the manager will be null. E.g., for browser tabs,
   // TabHelpers::AttachTabHelpers() calls CreateForWebContents(). It is invalid
   // to show a dialog on some kinds of WebContents. Crash cleanly in that case.
   CHECK(dialog_manager);
   return dialog_manager;
 }