Import Cobalt 19.master.0.203780

Includes the following patches:
  https://cobalt-review.googlesource.com/c/cobalt/+/5210
    by errong.leng@samsung.com
  https://cobalt-review.googlesource.com/c/cobalt/+/5270
    by linus.wang@samsung.com
diff --git a/src/third_party/web_platform_tests/XMLHttpRequest/open-method-case-insensitive.htm b/src/third_party/web_platform_tests/XMLHttpRequest/open-method-case-insensitive.htm
new file mode 100644
index 0000000..1033817
--- /dev/null
+++ b/src/third_party/web_platform_tests/XMLHttpRequest/open-method-case-insensitive.htm
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>XMLHttpRequest: open() - case-insensitive methods test</title>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <link rel="help" href="https://xhr.spec.whatwg.org/#the-open()-method" data-tested-assertations="following::ol/li[5]" />
+
+  </head>
+  <body>
+    <div id="log"></div>
+    <script>
+      function method(method) {
+        test(function() {
+          var client = new XMLHttpRequest()
+          client.open(method, "resources/content.py", false)
+          client.send(null)
+          assert_equals(client.getResponseHeader("x-request-method"), method.toUpperCase())
+        }, document.title + " (" + method.toUpperCase() + ")")
+      }
+      method("deLETE")
+      method("get")
+      method("heAd")
+      method("OpTIOns")
+      method("post")
+      method("Put")
+    </script>
+  </body>
+</html>