Move fetch-related predicates to core/fetch.

Source/web/AssociatedURLLoader.cpp

Index: Source/web/AssociatedURLLoader.cpp
diff --git a/Source/web/AssociatedURLLoader.cpp b/Source/web/AssociatedURLLoader.cpp
index 34c5bcfa04cdc34566ab821c62d29a768a3c0f11..0b80f51a1d7aaf81704c567481b3ff65b89deacd 100644
--- a/Source/web/AssociatedURLLoader.cpp
+++ b/Source/web/AssociatedURLLoader.cpp
@@ -71,7 +71,7 @@ private:
 
 void HTTPRequestHeaderValidator::visitHeader(const WebString& name, const WebString& value)
 {
-    m_isSafe = m_isSafe && isValidHTTPToken(name) && XMLHttpRequest::isAllowedHTTPHeader(name) && isValidHTTPHeaderValue(value);
+    m_isSafe = m_isSafe && isValidHTTPToken(name) && !CrossOriginAccessControl::isForbiddenHeaderName(name) && isValidHTTPHeaderValue(value);
 }
 
 // FIXME: Remove this and use WebCore code that does the same thing.
@@ -326,7 +326,7 @@ void AssociatedURLLoader::loadAsynchronously(const WebURLRequest& request, WebUR
     WebURLRequest newRequest(request);
     if (m_options.untrustedHTTP) {
         WebString method = newRequest.httpMethod();
-        allowLoad = isValidHTTPToken(method) && XMLHttpRequest::isAllowedHTTPMethod(method);
+        allowLoad = isValidHTTPToken(method) && CrossOriginAccessControl::isUsefulMethod(method);
         if (allowLoad) {
             newRequest.setHTTPMethod(XMLHttpRequest::uppercaseKnownHTTPMethod(method));
             HTTPRequestHeaderValidator validator;