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

chrome/browser/metrics/first_web_contents_profiler.h

 // 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.
 
 #ifndef CHROME_BROWSER_METRICS_FIRST_WEB_CONTENTS_PROFILER_H_
 #define CHROME_BROWSER_METRICS_FIRST_WEB_CONTENTS_PROFILER_H_
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "content/public/browser/web_contents_observer.h"
 
 namespace content {
 class WebContents;
 }  // namespace content
 
 // Measures start up performance of the first active web contents.
 // This class is declared on all platforms, but only defined on non-Android
 // platforms. Android code should not call any non-trivial methods on this
 // class.
@@ skipping 58 matching lines @@
 
   // Whether core metric collection is complete. Used to keep reporting old
   // stats post abandon to give us an intra-milestone comparison basis initially
   // between the old and new stats. TODO(gab): Remove this in M49.
   bool finished_;
 
   DISALLOW_COPY_AND_ASSIGN(FirstWebContentsProfiler);
 };
 
 #endif  // CHROME_BROWSER_METRICS_FIRST_WEB_CONTENTS_PROFILER_H_