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

components/ntp_snippets/ntp_snippets_fetcher_unittest.cc

 // Copyright 2016 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 "components/ntp_snippets/ntp_snippets_fetcher.h"
 
 #include <map>
 #include <utility>
 
 #include "base/json/json_reader.h"
@@ skipping 93 matching lines @@
 
   MOCK_METHOD1(Run, void(NTPSnippetsFetcher::OptionalSnippets* snippets));
 };
 
 // Factory for FakeURLFetcher objects that always generate errors.
 class FailingFakeURLFetcherFactory : public net::URLFetcherFactory {
  public:
   std::unique_ptr<net::URLFetcher> CreateURLFetcher(
       int id, const GURL& url, net::URLFetcher::RequestType request_type,
       net::URLFetcherDelegate* d) override {
-    return base::WrapUnique(new net::FakeURLFetcher(
+    return base::MakeUnique<net::FakeURLFetcher>(
         url, d, /*response_data=*/std::string(), net::HTTP_NOT_FOUND,
-        net::URLRequestStatus::FAILED));
+        net::URLRequestStatus::FAILED);
   }
 };
 
 void ParseJson(
     const std::string& json,
     const ntp_snippets::NTPSnippetsFetcher::SuccessCallback& success_callback,
     const ntp_snippets::NTPSnippetsFetcher::ErrorCallback& error_callback) {
   base::JSONReader json_reader;
   std::unique_ptr<base::Value> value = json_reader.ReadToValue(json);
   if (value)
@@ skipping 678 matching lines @@
   if (snippets) {
     // Matchers above aren't any more precise than this, so this is sufficient
     // for test-failure diagnostics.
     return os << "list with " << snippets->size() << " elements";
   } else {
     return os << "null";
   }
 }
 
 }  // namespace ntp_snippets