Require explicit selection of traits for LazyInstance

content/public/renderer/render_view_observer_tracker.h

Index: content/public/renderer/render_view_observer_tracker.h
diff --git a/content/public/renderer/render_view_observer_tracker.h b/content/public/renderer/render_view_observer_tracker.h
index a05ed9429235a8462b2ecf53abefc76b46b3a227..a5eaefc7ca27cf5e224391205cd4f2f46e454e11 100644
--- a/content/public/renderer/render_view_observer_tracker.h
+++ b/content/public/renderer/render_view_observer_tracker.h
@@ -53,16 +53,18 @@ class RenderViewObserverTracker {
  private:
   const RenderView* render_view_;
 
-  static base::LazyInstance<
-      std::map<const RenderView*, RenderViewObserverTracker<T>*>>
-      render_view_map_;
+  static typename base::LazyInstance<
+      std::map<const RenderView*, RenderViewObserverTracker<T>*>>::
+      DestructorAtExit render_view_map_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewObserverTracker<T>);
 };
 
 template <class T>
-base::LazyInstance<std::map<const RenderView*, RenderViewObserverTracker<T>*>>
-    RenderViewObserverTracker<T>::render_view_map_ = LAZY_INSTANCE_INITIALIZER;
+typename base::LazyInstance<
+    std::map<const RenderView*, RenderViewObserverTracker<T>*>>::
+    DestructorAtExit RenderViewObserverTracker<T>::render_view_map_ =
+        LAZY_INSTANCE_INITIALIZER;
 
 }  // namespace content