Convert Pass()→std::move() for Mac build.

content/browser/web_contents/web_drag_source_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.
 
 #import "content/browser/web_contents/web_drag_source_mac.h"
 
 #include <sys/param.h>
 
+#include <utility>
+
 #include "base/bind.h"
 #include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/mac/foundation_util.h"
 #include "base/pickle.h"
 #include "base/strings/string_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_restrictions.h"
@@ skipping 287 matching lines @@
 
   // CreateFileForDrop() will call base::PathExists(),
   // which is blocking.  Since this operation is already blocking the
   // UI thread on OSX, it should be reasonable to let it happen.
   base::ThreadRestrictions::ScopedAllowIO allowIO;
   base::File file(content::CreateFileForDrop(&filePath));
   if (!file.IsValid())
     return nil;
 
   if (downloadURL_.is_valid() && contents_) {
-    scoped_refptr<DragDownloadFile> dragFileDownloader(new DragDownloadFile(
-        filePath,
-        file.Pass(),
-        downloadURL_,
-        content::Referrer(contents_->GetLastCommittedURL(),
-                          dropData_->referrer_policy),
-        contents_->GetEncoding(),
-        contents_));
+    scoped_refptr<DragDownloadFile> dragFileDownloader(
+        new DragDownloadFile(filePath, std::move(file), downloadURL_,
+                             content::Referrer(contents_->GetLastCommittedURL(),
+                                               dropData_->referrer_policy),
+                             contents_->GetEncoding(), contents_));
 
     // The finalizer will take care of closing and deletion.
     dragFileDownloader->Start(new PromiseFileFinalizer(
         dragFileDownloader.get()));
   } else {
     // The writer will take care of closing and deletion.
     BrowserThread::PostTask(BrowserThread::FILE,
                             FROM_HERE,
                             base::Bind(&PromiseWriterHelper,
                                        *dropData_,
@@ skipping 129 matching lines @@
 - (NSImage*)dragImage {
   if (dragImage_)
     return dragImage_;
 
   // Default to returning a generic image.
   return content::GetContentClient()->GetNativeImageNamed(
       IDR_DEFAULT_FAVICON).ToNSImage();
 }
 
 @end  // @implementation WebDragSource (Private)