Show offline interstitial page when offline and reload when reconnected to network.

chrome/browser/renderer_host/resource_dispatcher_host.cc

 // Copyright (c) 2010 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.
 
 // See http://dev.chromium.org/developers/design-documents/multi-process-resource-loading
 
 #include "chrome/browser/renderer_host/resource_dispatcher_host.h"
 
 #include <vector>
 
@@ skipping 46 matching lines @@
 #include "net/base/load_flags.h"
 #include "net/base/mime_util.h"
 #include "net/base/net_errors.h"
 #include "net/base/request_priority.h"
 #include "net/base/ssl_cert_request_info.h"
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_context.h"
 #include "webkit/appcache/appcache_interceptor.h"
 #include "webkit/appcache/appcache_interfaces.h"
 
+// TODO(oshima): Enable this for other platforms.
+#if defined(OS_CHROMEOS)
+#include "chrome/browser/renderer_host/offline_resource_handler.h"
+#endif
+
 // Uncomment to enable logging of request traffic.
 // #define LOG_RESOURCE_DISPATCHER_REQUESTS
 
 #ifdef LOG_RESOURCE_DISPATCHER_REQUESTS
 # define RESOURCE_LOG(stuff) LOG(INFO) << stuff
 #else
 # define RESOURCE_LOG(stuff)
 #endif
 
 using base::Time;
@@ skipping 363 matching lines @@
   // Insert a buffered event handler before the actual one.
   handler = new BufferedResourceHandler(handler, this, request);
 
   // Insert safe browsing at the front of the chain, so it gets to decide
   // on policies first.
   if (safe_browsing_->enabled()) {
     handler = CreateSafeBrowsingResourceHandler(handler, child_id, route_id,
                                                 request_data.resource_type);
   }
 
+#if defined(OS_CHROMEOS)
+  // We check offline first, then check safe browsing so that we still can block
+  // unsafe site after we remove offline page.
+  handler =
+      new OfflineResourceHandler(handler, child_id, route_id, this, request);
+#endif
+
   // Make extra info and read footer (contains request ID).
   ResourceDispatcherHostRequestInfo* extra_info =
       new ResourceDispatcherHostRequestInfo(
           handler,
           process_type,
           child_id,
           route_id,
           request_id,
           request_data.frame_origin,
           request_data.main_frame_origin,
@@ skipping 1349 matching lines @@
     // them.
     case ResourceType::IMAGE:
       return net::LOWEST;
 
     default:
       // When new resource types are added, their priority must be considered.
       NOTREACHED();
       return net::LOW;
   }
 }