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

BUG=554298

Review URL: https://codereview.chromium.org/1871713002

Cr-Commit-Position: refs/heads/master@{#385980}
diff --git a/chrome/browser/extensions/chrome_app_api_browsertest.cc b/chrome/browser/extensions/chrome_app_api_browsertest.cc
index 108d57b..8bbc52e 100644
--- a/chrome/browser/extensions/chrome_app_api_browsertest.cc
+++ b/chrome/browser/extensions/chrome_app_api_browsertest.cc
@@ -2,11 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include <memory>
 #include <string>
 
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/extension_browsertest.h"
@@ -137,7 +137,7 @@
           browser()->tab_strip_model()->GetActiveWebContents(),
           kGetAppDetails,
           &result));
-  scoped_ptr<base::DictionaryValue> app_details(
+  std::unique_ptr<base::DictionaryValue> app_details(
       static_cast<base::DictionaryValue*>(
           base::JSONReader::Read(result).release()));
   // extension->manifest() does not contain the id.