Update AutocompleteTextFieldEditor to use non-deprecated dragging APIs.

ui/base/clipboard/clipboard_util_mac.mm

 // 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 "ui/base/clipboard/clipboard_util_mac.h"
 
 #include "base/mac/foundation_util.h"
 #include "base/mac/scoped_cftyperef.h"
 
 namespace {
@@ skipping 59 matching lines @@
   [item setString:urlString forType:UTIFromPboardType(NSStringPboardType)];
 
   [item setData:[urlString dataUsingEncoding:NSUTF8StringEncoding]
         forType:UTIFromPboardType(kCorePasteboardFlavorType_url)];
 
   [item setData:[title dataUsingEncoding:NSUTF8StringEncoding]
         forType:UTIFromPboardType(kCorePasteboardFlavorType_urln)];
   return item;
 }
 
+// static
+base::scoped_nsobject<NSPasteboardItem> ClipboardUtil::PasteboardItemFromString(
+    NSString* string) {
+  base::scoped_nsobject<NSPasteboardItem> item([[NSPasteboardItem alloc] init]);
+  [item setString:string forType:UTIFromPboardType(NSStringPboardType)];
+  return item;
+}
+
+//static
+NSString* ClipboardUtil::GetTitleFromPasteboardURL(NSPasteboard* pboard) {
+  return
+      [pboard stringForType:UTIFromPboardType(kCorePasteboardFlavorType_urln)];
+}
+
+//static
+NSString* ClipboardUtil::GetURLFromPasteboardURL(NSPasteboard* pboard) {
+  return
+      [pboard stringForType:UTIFromPboardType(kCorePasteboardFlavorType_url)];
+}
+
 }  // namespace ui