Require explicit selection of traits for LazyInstance

extensions/browser/guest_view/web_view/web_view_guest.cc

 // Copyright 2014 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 "extensions/browser/guest_view/web_view/web_view_guest.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 194 matching lines @@
 double ConvertZoomLevelToZoomFactor(double zoom_level) {
   double zoom_factor = content::ZoomLevelToZoomFactor(zoom_level);
   // Because the conversion from zoom level to zoom factor isn't perfect, the
   // resulting zoom factor is rounded to the nearest 6th decimal place.
   zoom_factor = round(zoom_factor * 1000000) / 1000000;
   return zoom_factor;
 }
 
 using WebViewKey = std::pair<int, int>;
 using WebViewKeyToIDMap = std::map<WebViewKey, int>;
-static base::LazyInstance<WebViewKeyToIDMap> web_view_key_to_id_map =
-    LAZY_INSTANCE_INITIALIZER;
+static base::LazyInstance<WebViewKeyToIDMap>::DestructorAtExit
+    web_view_key_to_id_map = LAZY_INSTANCE_INITIALIZER;
 
 }  // namespace
 
 // static
 void WebViewGuest::CleanUp(content::BrowserContext* browser_context,
                            int embedder_process_id,
                            int view_instance_id) {
   GuestViewBase::CleanUp(browser_context, embedder_process_id,
                          view_instance_id);
 
@@ skipping 1331 matching lines @@
     std::unique_ptr<base::DictionaryValue> args(new base::DictionaryValue());
     DispatchEventToView(base::MakeUnique<GuestViewEvent>(
         webview::kEventExitFullscreen, std::move(args)));
   }
   // Since we changed fullscreen state, sending a Resize message ensures that
   // renderer/ sees the change.
   web_contents()->GetRenderViewHost()->GetWidget()->WasResized();
 }
 
 }  // namespace extensions