Fix resource loads dropped when iframe is transferred to a new window and original window closes.

content/browser/renderer_host/resource_dispatcher_host.cc

Index: content/browser/renderer_host/resource_dispatcher_host.cc
diff --git a/content/browser/renderer_host/resource_dispatcher_host.cc b/content/browser/renderer_host/resource_dispatcher_host.cc
index 24ef6825bfd520b7177f8b5f97cb61a6294aaa40..64e45f337dd4dbeb7625fdac1e82e8da15aae910 100644
--- a/content/browser/renderer_host/resource_dispatcher_host.cc
+++ b/content/browser/renderer_host/resource_dispatcher_host.cc
@@ -338,6 +338,8 @@ bool ResourceDispatcherHost::OnMessageReceived(const IPC::Message& message,
     IPC_MESSAGE_HANDLER(ResourceHostMsg_DataDownloaded_ACK, OnDataDownloadedACK)
     IPC_MESSAGE_HANDLER(ResourceHostMsg_UploadProgress_ACK, OnUploadProgressACK)
     IPC_MESSAGE_HANDLER(ResourceHostMsg_CancelRequest, OnCancelRequest)
+    IPC_MESSAGE_HANDLER(ResourceHostMsg_TransferRequestToNewPage,
+                        OnTransferRequestToNewPage)
     IPC_MESSAGE_HANDLER(ResourceHostMsg_FollowRedirect, OnFollowRedirect)
     IPC_MESSAGE_HANDLER(ViewHostMsg_SwapOut_ACK, OnSwapOutACK)
     IPC_MESSAGE_HANDLER(ViewHostMsg_DidLoadResourceFromMemoryCache,
@@ -634,6 +636,11 @@ void ResourceDispatcherHost::OnCancelRequest(int request_id) {
   CancelRequest(filter_->child_id(), request_id, true);
 }
 
+void ResourceDispatcherHost::OnTransferRequestToNewPage(const IPC::Message& msg,
+                                                        int request_id) {
+  TransferRequestToNewPage(filter_->child_id(), msg.routing_id(), request_id);
+}
+
 void ResourceDispatcherHost::OnFollowRedirect(
     int request_id,
     bool has_new_first_party_for_cookies,
@@ -1319,6 +1326,23 @@ void ResourceDispatcherHost::CancelRequest(int child_id,
   }
 }
 
+void ResourceDispatcherHost::TransferRequestToNewPage(int process_unique_id,
+                                                      int new_routing_id,
+                                                      int request_id) {
+  PendingRequestList::iterator i = pending_requests_.find(
+      GlobalRequestID(process_unique_id, request_id));
+  if (i == pending_requests_.end()) {
+    // We probably want to remove this warning eventually, but I wanted to be
+    // able to notice when this happens during initial development since it
+    // should be rare and may indicate a bug.
+    DLOG(WARNING) << "Updating a request that wasn't found";
+    return;
+  }
+  net::URLRequest* request = i->second;
+  ResourceDispatcherHostRequestInfo* info = InfoForRequest(request);
+  info->set_route_id(new_routing_id);
+}
+
 bool ResourceDispatcherHost::CancelRequestInternal(net::URLRequest* request,
                                                    bool from_renderer) {
   VLOG(1) << "CancelRequest: " << request->url().spec();