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

headless/lib/browser/headless_content_browser_client.cc

Index: headless/lib/browser/headless_content_browser_client.cc
diff --git a/headless/lib/browser/headless_content_browser_client.cc b/headless/lib/browser/headless_content_browser_client.cc
index 1c83d75f8b11164b4d5ef6a0c042dddc6b62a41e..9f36dec6fa2cd9f03d3f507d183337ecb878e2d8 100644
--- a/headless/lib/browser/headless_content_browser_client.cc
+++ b/headless/lib/browser/headless_content_browser_client.cc
@@ -23,7 +23,7 @@ HeadlessContentBrowserClient::~HeadlessContentBrowserClient() {}
 content::BrowserMainParts* HeadlessContentBrowserClient::CreateBrowserMainParts(
     const content::MainFunctionParams&) {
   std::unique_ptr<HeadlessBrowserMainParts> browser_main_parts =
-      base::WrapUnique(new HeadlessBrowserMainParts(browser_));
+      base::MakeUnique<HeadlessBrowserMainParts>(browser_);
   browser_->set_browser_main_parts(browser_main_parts.get());
   return browser_main_parts.release();
 }