Teach URLRequest about initiator checks for First-Party-Only cookies.

content/child/request_info.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_CHILD_REQUEST_INFO_H_
 #define CONTENT_CHILD_REQUEST_INFO_H_
 
 #include <stdint.h>
 
 #include <string>
 
 #include "content/common/content_export.h"
 #include "content/common/service_worker/service_worker_types.h"
 #include "content/public/common/referrer.h"
 #include "content/public/common/request_context_frame_type.h"
 #include "content/public/common/request_context_type.h"
 #include "content/public/common/resource_type.h"
 #include "net/base/request_priority.h"
 #include "third_party/WebKit/public/platform/WebReferrerPolicy.h"
 #include "third_party/WebKit/public/platform/WebTaskRunner.h"
 #include "third_party/WebKit/public/platform/WebURLRequest.h"
 #include "url/gurl.h"
+#include "url/origin.h"
 
 namespace blink {
 class WebTaskRunner;
 } // namespace blink
 
 namespace content {
 
 // Structure used when calling BlinkPlatformImpl::CreateResourceLoader().
 struct CONTENT_EXPORT RequestInfo {
   RequestInfo();
   ~RequestInfo();
 
   // HTTP-style method name (e.g., "GET" or "POST").
   std::string method;
 
   // Absolute URL encoded in ASCII per the rules of RFC-2396.
   GURL url;
 
-  // URL of the document in the top-level window, which may be checked by the
-  // third-party cookie blocking policy.
+  // URL representing the first-party origin for the request, which may be
+  // checked by the third-party cookie blocking policy.
   GURL first_party_for_cookies;
 
+  // The origin of the context which initiated the request.
+  url::Origin request_initiator;
+
   // Optional parameter, the referrer to use for the request for the url member.
   Referrer referrer;
 
   // For HTTP(S) requests, the headers parameter can be a \r\n-delimited and
   // \r\n-terminated list of MIME headers.  They should be ASCII-encoded using
   // the standard MIME header encoding rules.  The headers parameter can also
   // be null if no extra request headers need to be set.
   std::string headers;
 
   // Composed of the values defined in url_request_load_flags.h.
@@ skipping 63 matching lines @@
   // Optional, the specific task queue to execute loading tasks on.
   scoped_ptr<blink::WebTaskRunner> loading_web_task_runner;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(RequestInfo);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_REQUEST_INFO_H_