Convert //chrome/browser/ui from scoped_ptr to std::unique_ptr

chrome/browser/ui/search/instant_search_prerenderer.cc

 // Copyright 2013 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/search/instant_search_prerenderer.h"
 
 #include "chrome/browser/prerender/prerender_handle.h"
 #include "chrome/browser/prerender/prerender_manager.h"
 #include "chrome/browser/prerender/prerender_manager_factory.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 49 matching lines @@
 
 void InstantSearchPrerenderer::Init(
     content::SessionStorageNamespace* session_storage_namespace,
     const gfx::Size& size) {
   // TODO(kmadhusu): Enable Instant for Incognito profile.
   if (profile_->IsOffTheRecord())
     return;
 
   // Only cancel the old prerender after starting the new one, so if the URLs
   // are the same, the underlying prerender will be reused.
-  scoped_ptr<prerender::PrerenderHandle> old_prerender_handle(
+  std::unique_ptr<prerender::PrerenderHandle> old_prerender_handle(
       prerender_handle_.release());
   prerender::PrerenderManager* prerender_manager =
       prerender::PrerenderManagerFactory::GetForProfile(profile_);
   if (prerender_manager) {
     prerender_handle_.reset(prerender_manager->AddPrerenderForInstant(
         prerender_url_, session_storage_namespace, size));
   }
   if (old_prerender_handle)
     old_prerender_handle->OnCancel();
 }
@@ skipping 108 matching lines @@
   return (prerender_handle_ && prerender_handle_->contents()) ?
       prerender_handle_->contents()->prerender_contents() : NULL;
 }
 
 bool InstantSearchPrerenderer::QueryMatchesPrefetch(
     const base::string16& query) const {
   if (search::ShouldReuseInstantSearchBasePage())
     return true;
   return last_instant_suggestion_.text == query;
 }