Plumb redirect info out of net, through content, and into child processes.

content/common/resource_messages.h

Index: content/common/resource_messages.h
diff --git a/content/common/resource_messages.h b/content/common/resource_messages.h
index d4a7d976ca5a5b45d5ebbdec571e85db015a11b9..dc6147a96d2eebea75f42f863e3c4d055f708f27 100644
--- a/content/common/resource_messages.h
+++ b/content/common/resource_messages.h
@@ -16,6 +16,7 @@
 #include "ipc/ipc_message_macros.h"
 #include "net/base/request_priority.h"
 #include "net/http/http_response_info.h"
+#include "net/url_request/redirect_info.h"
 
 #ifndef CONTENT_COMMON_RESOURCE_MESSAGES_H_
 #define CONTENT_COMMON_RESOURCE_MESSAGES_H_
@@ -121,6 +122,14 @@ IPC_STRUCT_TRAITS_BEGIN(content::ResourceResponseInfo)
   IPC_STRUCT_TRAITS_MEMBER(original_url_via_service_worker)
 IPC_STRUCT_TRAITS_END()
 
+IPC_STRUCT_TRAITS_BEGIN(net::RedirectInfo)
+  IPC_STRUCT_TRAITS_MEMBER(status_code)
+  IPC_STRUCT_TRAITS_MEMBER(new_method)
+  IPC_STRUCT_TRAITS_MEMBER(new_url)
+  IPC_STRUCT_TRAITS_MEMBER(new_first_party_for_cookies)
+  IPC_STRUCT_TRAITS_MEMBER(new_referrer)
+IPC_STRUCT_TRAITS_END()
+
 // Parameters for a resource request.
 IPC_STRUCT_BEGIN(ResourceHostMsg_Request)
   // The request method: GET, POST, etc.
@@ -260,10 +269,9 @@ IPC_MESSAGE_CONTROL3(ResourceMsg_UploadProgress,
 // Sent when the request has been redirected.  The receiver is expected to
 // respond with either a FollowRedirect message (if the redirect is to be
 // followed) or a CancelRequest message (if it should not be followed).
-IPC_MESSAGE_CONTROL4(ResourceMsg_ReceivedRedirect,
+IPC_MESSAGE_CONTROL3(ResourceMsg_ReceivedRedirect,
                      int /* request_id */,
-                     GURL /* new_url */,
-                     GURL /* new_first_party_for_cookies */,
+                     net::RedirectInfo /* redirect_info */,
                      content::ResourceResponseHead)
 
 // Sent to set the shared memory buffer to be used to transmit response data to