Convert Pass()→std::move() in //chrome

chrome/browser/prefs/proxy_policy_unittest.cc

Index: chrome/browser/prefs/proxy_policy_unittest.cc
diff --git a/chrome/browser/prefs/proxy_policy_unittest.cc b/chrome/browser/prefs/proxy_policy_unittest.cc
index 650564644741c450adb389f4f511e42ba7c8e7c3..fb078bf3ddce2f08756569e4bc6b14ef940cc961 100644
--- a/chrome/browser/prefs/proxy_policy_unittest.cc
+++ b/chrome/browser/prefs/proxy_policy_unittest.cc
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include <utility>
+
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/command_line.h"
@@ -111,7 +113,7 @@ class ProxyPolicyTest : public testing::Test {
     scoped_ptr<syncable_prefs::PrefServiceSyncable> prefs =
         factory.CreateSyncable(registry.get());
     chrome::RegisterUserProfilePrefs(registry.get());
-    return prefs.Pass();
+    return std::move(prefs);
   }
 
   content::TestBrowserThreadBundle thread_bundle_;