PlzNavigate: support the WebRequest API

extensions/browser/extension_navigation_ui_data.h

Index: extensions/browser/extension_navigation_ui_data.h
diff --git a/extensions/browser/extension_navigation_ui_data.h b/extensions/browser/extension_navigation_ui_data.h
new file mode 100644
index 0000000000000000000000000000000000000000..b5145685020436de4d888824762653e592463c18
--- /dev/null
+++ b/extensions/browser/extension_navigation_ui_data.h
@@ -0,0 +1,46 @@
+// 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.
+
+#ifndef EXTENSIONS_BROWSER_EXTENSION_NAVIGATION_UI_DATA_H_
+#define EXTENSIONS_BROWSER_EXTENSION_NAVIGATION_UI_DATA_H_
+
+#include <memory>
+
+#include "base/macros.h"
+#include "extensions/browser/extension_api_frame_id_map.h"
+
+namespace content {
+class NavigationHandle;
+}
+
+namespace extensions {
+
+// PlzNavigate: initialized on the UI thread for all navigations. A copy is used
+// on the IO thread by the WebRequest API to access to the FrameData.
+class ExtensionNavigationUIData {
+ public:
+  ExtensionNavigationUIData();
+  ExtensionNavigationUIData(content::NavigationHandle* navigation_handle,
+                            int tab_id,
+                            int window_id);
+
+  std::unique_ptr<ExtensionNavigationUIData> DeepCopy() const;
+
+  const ExtensionApiFrameIdMap::FrameData& frame_data() const {
+    return frame_data_;
+  }
+
+ private:
+  void set_frame_data(const ExtensionApiFrameIdMap::FrameData& frame_data) {
+    frame_data_ = frame_data;
+  }
+
+  ExtensionApiFrameIdMap::FrameData frame_data_;
+
+  DISALLOW_COPY_AND_ASSIGN(ExtensionNavigationUIData);
+};
+
+}  // namespace extensions
+
+#endif  // EXTENSIONS_BROWSER_EXTENSION_NAVIGATION_UI_DATA_H_