Showing previews UI for Offline Previews

components/offline_pages/loaded_offline_page_info.cc

Index: components/offline_pages/loaded_offline_page_info.cc
diff --git a/components/offline_pages/loaded_offline_page_info.cc b/components/offline_pages/loaded_offline_page_info.cc
new file mode 100644
index 0000000000000000000000000000000000000000..11c5c0321944177f6d21fe49069625389e9ac53a
--- /dev/null
+++ b/components/offline_pages/loaded_offline_page_info.cc
@@ -0,0 +1,60 @@
+// Copyright 2016 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 "components/offline_pages/loaded_offline_page_info.h"
+
+#include "components/offline_pages/offline_page_item.h"
+#include "components/offline_pages/request_header/offline_page_header.h"
+#include "net/url_request/url_request.h"
+
+namespace {
+
+const void* const kLoadedOfflinePageInfoKey = &kLoadedOfflinePageInfoKey;
+}
+
+namespace offline_pages {
+
+LoadedOfflinePageInfo::LoadedOfflinePageInfo() {}
+
+LoadedOfflinePageInfo::~LoadedOfflinePageInfo() {}
+
+std::unique_ptr<LoadedOfflinePageInfo> LoadedOfflinePageInfo::DeepCopy() {
+  std::unique_ptr<LoadedOfflinePageInfo> copy(new LoadedOfflinePageInfo);
+  if (offline_page_)
+    copy->offline_page_.reset(new OfflinePageItem(*offline_page_));
+  if (offline_header_)
+    copy->offline_header_.reset(new OfflinePageHeader(*offline_header_));
+  copy->is_offline_preview_ = is_offline_preview_;
+  return copy;
+}
+
+// static
+void LoadedOfflinePageInfo::CreateInfoForRequest(
+    net::URLRequest* request,
+    std::unique_ptr<OfflinePageItem> offline_page,
+    std::unique_ptr<OfflinePageHeader> offline_header,
+    bool is_offline_preview) {
+  DCHECK(request);
+  DCHECK(offline_page);
+  DCHECK(offline_header);
+  LoadedOfflinePageInfo* info = GetInfo(*request);
+  DCHECK(!info);
+
+  info = new LoadedOfflinePageInfo();
+  info->offline_page_ = std::move(offline_page);
+  info->offline_header_ = std::move(offline_header);
+  info->is_offline_preview_ = is_offline_preview;
+
+  request->SetUserData(kLoadedOfflinePageInfoKey, info);
+}
+
+// static
+LoadedOfflinePageInfo* LoadedOfflinePageInfo::GetInfo(
+    const net::URLRequest& request) {
+  LoadedOfflinePageInfo* info = static_cast<LoadedOfflinePageInfo*>(
+      request.GetUserData(kLoadedOfflinePageInfoKey));
+  return info;
+}
+
+}  // namespace offline_pages