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

headless/lib/headless_browser_context_browsertest.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 <memory>
 
 #include "base/files/scoped_temp_dir.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/threading/thread_restrictions.h"
@@ skipping 142 matching lines @@
   std::unique_ptr<HeadlessDevToolsClient> devtools_client2_;
   std::unique_ptr<LoadObserver> load_observer_;
 };
 
 HEADLESS_ASYNC_DEVTOOLED_TEST_F(HeadlessBrowserContextIsolationTest);
 
 IN_PROC_BROWSER_TEST_F(HeadlessBrowserTest, ContextProtocolHandler) {
   const std::string kResponseBody = "<p>HTTP response body</p>";
   ProtocolHandlerMap protocol_handlers;
   protocol_handlers[url::kHttpScheme] =
-      base::WrapUnique(new TestProtocolHandler(kResponseBody));
+      base::MakeUnique<TestProtocolHandler>(kResponseBody);
 
   // Load a page which doesn't actually exist, but which is fetched by our
   // custom protocol handler.
   HeadlessBrowserContext* browser_context =
       browser()
           ->CreateBrowserContextBuilder()
           .SetProtocolHandlers(std::move(protocol_handlers))
           .Build();
   HeadlessWebContents* web_contents =
       browser_context->CreateWebContentsBuilder()
@@ skipping 87 matching lines @@
           .Build();
 
   EXPECT_TRUE(WaitForLoad(web_contents));
 
   // Similar to test above, but now we are in incognito mode,
   // so nothing should be written to this directory.
   EXPECT_TRUE(base::IsDirectoryEmpty(user_data_dir.path()));
 }
 
 }  // namespace headless