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

extensions/shell/browser/shell_url_request_context_getter.cc

Index: extensions/shell/browser/shell_url_request_context_getter.cc
diff --git a/extensions/shell/browser/shell_url_request_context_getter.cc b/extensions/shell/browser/shell_url_request_context_getter.cc
index 6e6f2b5eaf843f5d207112ac773e850a0999a20a..654f468ca72b5de46fd8f80b1b83533eb309413f 100644
--- a/extensions/shell/browser/shell_url_request_context_getter.cc
+++ b/extensions/shell/browser/shell_url_request_context_getter.cc
@@ -38,8 +38,8 @@ ShellURLRequestContextGetter::~ShellURLRequestContextGetter() {
 
 std::unique_ptr<net::NetworkDelegate>
 ShellURLRequestContextGetter::CreateNetworkDelegate() {
-  return base::WrapUnique(
-      new ShellNetworkDelegate(browser_context_, extension_info_map_));
+  return base::MakeUnique<ShellNetworkDelegate>(browser_context_,
+                                                extension_info_map_);
 }
 
 }  // namespace extensions