Re-write many calls to WrapUnique() with MakeUnique()

chrome/browser/page_load_metrics/metrics_web_contents_observer.cc

 // Copyright 2015 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/page_load_metrics/metrics_web_contents_observer.h"
 
 #include <algorithm>
 #include <ostream>
 #include <string>
 #include <utility>
@@ skipping 765 matching lines @@
   // We can have two provisional loads in some cases. E.g. a same-site
   // navigation can have a concurrent cross-process navigation started
   // from the omnibox.
   DCHECK_GT(2ul, provisional_loads_.size());
   // Passing raw pointers to observers_ and embedder_interface_ is safe because
   // the MetricsWebContentsObserver owns them both list and they are torn down
   // after the PageLoadTracker. The PageLoadTracker does not hold on to
   // committed_load_ or navigation_handle beyond the scope of the constructor.
   provisional_loads_.insert(std::make_pair(
       navigation_handle,
-      base::WrapUnique(new PageLoadTracker(
+      base::MakeUnique<PageLoadTracker>(
           in_foreground_, embedder_interface_.get(), currently_committed_url,
-          navigation_handle, chain_size, chain_size_same_url))));
+          navigation_handle, chain_size, chain_size_same_url)));
 }
 
 void MetricsWebContentsObserver::OnRequestComplete(
     content::ResourceType resource_type,
     bool was_cached,
     int net_error) {
   // For simplicity, only count subresources. Navigations are hard to attribute
   // here because we won't have a committed load by the time data streams in
   // from the IO thread.
   if (resource_type == content::RESOURCE_TYPE_MAIN_FRAME &&
@@ skipping 270 matching lines @@
     if (navigation_handle->IsSamePage() || navigation_handle->IsErrorPage())
       return false;
     const std::string& mime_type = web_contents()->GetContentsMimeType();
     if (mime_type != "text/html" && mime_type != "application/xhtml+xml")
       return false;
   }
   return true;
 }
 
 }  // namespace page_load_metrics