crossSite navs

webkit/browser/appcache/appcache_request_handler.cc

 // Copyright (c) 2011 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.
 
 #include "webkit/browser/appcache/appcache_request_handler.h"
 
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_job.h"
 #include "webkit/browser/appcache/appcache.h"
+#include "webkit/browser/appcache/appcache_backend_impl.h"
 #include "webkit/browser/appcache/appcache_policy.h"
 #include "webkit/browser/appcache/appcache_url_request_job.h"
 
 namespace appcache {
 
 AppCacheRequestHandler::AppCacheRequestHandler(
     AppCacheHost* host, ResourceType::Type resource_type)
     : host_(host), resource_type_(resource_type),
       is_waiting_for_cache_selection_(false), found_group_id_(0),
       found_cache_id_(0), found_network_namespace_(false),
       cache_entry_not_found_(false), maybe_load_resource_executed_(false) {
   DCHECK(host_);
   host_->AddObserver(this);
 }
 
 AppCacheRequestHandler::~AppCacheRequestHandler() {
   if (host_) {
     storage()->CancelDelegateCallbacks(this);
     host_->RemoveObserver(this);
   }
 }
 
 AppCacheStorage* AppCacheRequestHandler::storage() const {
   DCHECK(host_);
   return host_->storage();
 }
 
-void AppCacheRequestHandler::GetExtraResponseInfo(
-    int64* cache_id, GURL* manifest_url) {
-  if (job_.get() && job_->is_delivering_appcache_response()) {
-    *cache_id = job_->cache_id();
-    *manifest_url = job_->manifest_url();
-  }
-}
-
 AppCacheURLRequestJob* AppCacheRequestHandler::MaybeLoadResource(
     net::URLRequest* request, net::NetworkDelegate* network_delegate) {
   maybe_load_resource_executed_ = true;
   if (!host_ || !IsSchemeAndMethodSupported(request) || cache_entry_not_found_)
     return NULL;
 
   // This method can get called multiple times over the life
   // of a request. The case we detect here is having scheduled
   // delivery of a "network response" using a job setup on an
   // earlier call thru this method. To send the request thru
@@ skipping 108 matching lines @@
   // 6.9.6, step 4: If this results in a 4xx or 5xx status code
   // or there were network errors, get the resource of the fallback entry.
   job_ = new AppCacheURLRequestJob(request, network_delegate,
                                    storage(), host_);
   DeliverAppCachedResponse(
       found_fallback_entry_, found_cache_id_, found_group_id_,
       found_manifest_url_, true, found_namespace_entry_url_);
   return job_.get();
 }
 
+void AppCacheRequestHandler::GetExtraResponseInfo(
+    int64* cache_id, GURL* manifest_url) {
+  if (job_.get() && job_->is_delivering_appcache_response()) {
+    *cache_id = job_->cache_id();
+    *manifest_url = job_->manifest_url();
+  }
+}
+
+void AppCacheRequestHandler::PrepareForCrossSiteTransfer(int old_process_id) {
+  if (!host_)
+    return;
+  AppCacheBackendImpl* backend = host_->service()->GetBackend(old_process_id);
+  host_for_cross_site_transfer_ = backend->TransferHostOut(host_->host_id());
+  DCHECK_EQ(host_, host_for_cross_site_transfer_.get());
+}
+
+void AppCacheRequestHandler::CompleteCrossSiteTransfer(
+    int new_process_id, int new_host_id) {
+  if (!host_for_cross_site_transfer_.get())
+    return;
+  DCHECK_EQ(host_, host_for_cross_site_transfer_.get());
+  AppCacheBackendImpl* backend = host_->service()->GetBackend(new_process_id);
+  backend->TransferHostIn(new_host_id, host_for_cross_site_transfer_.Pass());
+}
+
 void AppCacheRequestHandler::OnDestructionImminent(AppCacheHost* host) {
   storage()->CancelDelegateCallbacks(this);
   host_ = NULL;  // no need to RemoveObserver, the host is being deleted
 
   // Since the host is being deleted, we don't have to complete any job
   // that is current running. It's destined for the bit bucket anyway.
   if (job_.get()) {
     job_->Kill();
     job_ = NULL;
   }
@@ skipping 188 matching lines @@
   if (!host_->associated_cache() ||
       !host_->associated_cache()->is_complete()) {
     DeliverNetworkResponse();
     return;
   }
 
   ContinueMaybeLoadSubResource();
 }
 
 }  // namespace appcache