Move TestingPrefService to use unique_ptr<Value>

chrome/browser/ui/cocoa/bookmarks/bookmark_bar_controller_unittest.mm

Index: chrome/browser/ui/cocoa/bookmarks/bookmark_bar_controller_unittest.mm
diff --git a/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_controller_unittest.mm b/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_controller_unittest.mm
index 36de3f1414eb94b7a6a82f5baff07419f333f130..b795a0574d7d67da91de638257bf6afa70feb897 100644
--- a/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_controller_unittest.mm
+++ b/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_controller_unittest.mm
@@ -10,6 +10,7 @@
 #include "base/mac/mac_util.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/macros.h"
+#include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_util.h"
@@ -1691,12 +1692,12 @@ TEST_F(BookmarkBarControllerTest, ManagedShowAppsShortcutInBookmarksBar) {
 
   // Hide the apps shortcut by policy, via the managed pref.
   prefs->SetManagedPref(bookmarks::prefs::kShowAppsShortcutInBookmarkBar,
-                        new base::Value(false));
+                        base::MakeUnique<base::Value>(false));
   EXPECT_TRUE([bar_ appsPageShortcutButtonIsHidden]);
 
   // And try showing it via policy too.
   prefs->SetManagedPref(bookmarks::prefs::kShowAppsShortcutInBookmarkBar,
-                        new base::Value(true));
+                        base::MakeUnique<base::Value>(true));
   EXPECT_FALSE([bar_ appsPageShortcutButtonIsHidden]);
 }