Reduce method names converted to upper case via uppercaseKnownHTTPMethod()

Source/core/xml/XMLHttpRequest.cpp

Index: Source/core/xml/XMLHttpRequest.cpp
diff --git a/Source/core/xml/XMLHttpRequest.cpp b/Source/core/xml/XMLHttpRequest.cpp
index 245bbc5f5dfa27af1b7714dc5abf953eda1661ab..88c950d69f39327d0ab5d620483090a1b043698e 100644
--- a/Source/core/xml/XMLHttpRequest.cpp
+++ b/Source/core/xml/XMLHttpRequest.cpp
@@ -488,22 +488,20 @@ bool XMLHttpRequest::isAllowedHTTPMethod(const String& method)
 
 AtomicString XMLHttpRequest::uppercaseKnownHTTPMethod(const AtomicString& method)
 {
+    // http://xhr.spec.whatwg.org/#dom-xmlhttprequest-open
+    // If method is a case-insensitive match for `DELETE`, `GET`, `HEAD`, `OPTIONS`, `POST`, or
+    // `PUT`, subtract 0x20 from each byte in the range 0x61 (ASCII a) to 0x7A (ASCII z).
+    //
+    // If it does not match any of the above, it is passed through literally, including in the final
+    // request.
     const char* const methods[] = {
-        "COPY",
         "DELETE",
         "GET",
         "HEAD",
-        "INDEX",
-        "LOCK",
-        "M-POST",
-        "MKCOL",
-        "MOVE",
         "OPTIONS",
         "POST",
-        "PROPFIND",
-        "PROPPATCH",
-        "PUT",
-        "UNLOCK" };
+        "PUT"
+    };
     for (unsigned i = 0; i < WTF_ARRAY_LENGTH(methods); ++i) {
         if (equalIgnoringCase(method, methods[i])) {
             // Don't bother allocating a new string if it's already all uppercase.