Implement offline mode behind a flag

content/browser/loader/resource_dispatcher_host_impl.cc

Index: content/browser/loader/resource_dispatcher_host_impl.cc
diff --git a/content/browser/loader/resource_dispatcher_host_impl.cc b/content/browser/loader/resource_dispatcher_host_impl.cc
index 3849313958054add332c20ecf097b12344f45395..d7baea4ff7ee8d05b7225d16eaadb9631da94fdf 100644
--- a/content/browser/loader/resource_dispatcher_host_impl.cc
+++ b/content/browser/loader/resource_dispatcher_host_impl.cc
@@ -231,8 +231,9 @@ net::Error CallbackAndReturn(
   return net_error;
 }
 
-int BuildLoadFlagsForRequest(const ResourceHostMsg_Request& request_data,
-                             int child_id, bool is_sync_load) {
+int BuildLoadFlagsForRequest(
+    const ResourceHostMsg_Request& request_data, int child_id,
+    bool is_sync_load) {
   int load_flags = request_data.load_flags;
 
   // Although EV status is irrelevant to sub-frames and sub-resources, we have
@@ -700,6 +701,10 @@ void ResourceDispatcherHostImpl::DidReceiveRedirect(ResourceLoader* loader,
 
 void ResourceDispatcherHostImpl::DidReceiveResponse(ResourceLoader* loader) {
   ResourceRequestInfoImpl* info = loader->GetRequestInfo();
+  // There should be an entry in the map created when we dispatched the
+  // request.
+  offline_map_[ProcessRouteIDs(info->GetChildID(), info->GetRouteID())]->
+      RequestCompleted(loader->request()->response_info());
 
   int render_process_id, render_view_id;
   if (!info->GetAssociatedRenderView(&render_process_id, &render_view_id))
@@ -934,6 +939,12 @@ void ResourceDispatcherHostImpl::BeginRequest(
   int load_flags =
       BuildLoadFlagsForRequest(request_data, child_id, is_sync_load);
 
+  ProcessRouteIDs id(child_id, route_id);
+  if (!offline_map_[id])
+    offline_map_[id] = new OfflinePolicy();
+  load_flags |= offline_map_[id]->GetAdditionalLoadFlags(
+      load_flags, request_data.resource_type);
+
   // Construct the request.
   scoped_ptr<net::URLRequest> new_request;
   net::URLRequest* request;
@@ -1368,6 +1379,10 @@ void ResourceDispatcherHostImpl::CancelRequestsForRoute(int child_id,
       CancelBlockedRequestsForRoute(child_id, *iter);
     }
   }
+
+  // Cleanup the offline state for the route.
+  delete offline_map_[ProcessRouteIDs(child_id, route_id)];
+  offline_map_.erase(ProcessRouteIDs(child_id, route_id));
 }
 
 // Cancels the request and removes it from the list.