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

content/common/font_list_mac.mm

 // Copyright (c) 2011 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 "content/common/font_list.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/mac/scoped_nsautorelease_pool.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/values.h"
 
 namespace content {
 
 scoped_ptr<base::ListValue> GetFontList_SlowBlocking() {
   base::mac::ScopedNSAutoreleasePool autorelease_pool;
   scoped_ptr<base::ListValue> font_list(new base::ListValue);
   NSFontManager* fontManager = [[[NSFontManager alloc] init] autorelease];
   NSArray* fonts = [fontManager availableFontFamilies];
   for (NSString* family_name in fonts) {
     NSString* localized_family_name =
         [fontManager localizedNameForFamily:family_name face:nil];
     base::ListValue* font_item = new base::ListValue();
     base::string16 family = base::SysNSStringToUTF16(family_name);
     font_item->Append(new base::StringValue(family));
     base::string16 loc_family = base::SysNSStringToUTF16(localized_family_name);
     font_item->Append(new base::StringValue(loc_family));
     font_list->Append(font_item);
   }
-  return font_list.Pass();
+  return font_list;
 }
 
 }  // namespace content