Require explicit selection of traits for LazyInstance

chrome/browser/extensions/api/runtime/chrome_runtime_api_delegate.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 "chrome/browser/extensions/api/runtime/chrome_runtime_api_delegate.h"
 
 #include <memory>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 60 matching lines @@
   // Returns the actual policy to use.
   static const net::BackoffEntry::Policy* Get();
 
  private:
   net::BackoffEntry::Policy policy_;
 };
 
 // We use a LazyInstance since one of the the policy values references an
 // extern symbol, which would cause a static initializer to be generated if we
 // just declared the policy struct as a static variable.
-base::LazyInstance<BackoffPolicy> g_backoff_policy = LAZY_INSTANCE_INITIALIZER;
+base::LazyInstance<BackoffPolicy>::DestructorAtExit g_backoff_policy =
+    LAZY_INSTANCE_INITIALIZER;
 
 BackoffPolicy::BackoffPolicy() {
   policy_ = {
       // num_errors_to_ignore
       0,
 
       // initial_delay_ms (note that we set 'always_use_initial_delay' to false
       // below)
       1000 * extensions::kDefaultUpdateFrequencySeconds,
 
@@ skipping 294 matching lines @@
     const UpdateCheckResult& result) {
   auto it = update_check_info_.find(extension_id);
   if (it == update_check_info_.end())
     return;
   std::vector<UpdateCheckCallback> callbacks;
   it->second.callbacks.swap(callbacks);
   for (const auto& callback : callbacks) {
     callback.Run(result);
   }
 }