Require explicit selection of traits for LazyInstance

chrome/browser/ui/views/harmony/harmony_layout_delegate.cc

 // 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 "chrome/browser/ui/views/harmony/harmony_layout_delegate.h"
 
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 
-static base::LazyInstance<HarmonyLayoutDelegate> harmony_layout_delegate_ =
-    LAZY_INSTANCE_INITIALIZER;
+static base::LazyInstance<HarmonyLayoutDelegate>::DestructorAtExit
+    harmony_layout_delegate_ = LAZY_INSTANCE_INITIALIZER;
 
 // static
 HarmonyLayoutDelegate* HarmonyLayoutDelegate::Get() {
   return harmony_layout_delegate_.Pointer();
 }
 
 int HarmonyLayoutDelegate::GetMetric(Metric metric) const {
   switch (metric) {
     case Metric::BUTTON_HORIZONTAL_PADDING:
       return kHarmonyLayoutUnit;
@@ skipping 53 matching lines @@
     case DialogWidth::SMALL:
       return 320;
     case DialogWidth::MEDIUM:
       return 448;
     case DialogWidth::LARGE:
       return 512;
   }
   NOTREACHED();
   return 0;
 }