Navigation transitions (web to native app): Pass data after starting provisional load (Chrome side)

content/public/common/transition_element.h

+// Copyright 2014 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 CONTENT_PUBLIC_COMMON_TRANSITION_ELEMENT_H_
+#define CONTENT_PUBLIC_COMMON_TRANSITION_ELEMENT_H_
+
+#include <string>
+
+#include "content/common/content_export.h"
+#include "ui/gfx/geometry/rect.h"
+
+namespace content {
+
+// This struct stores the information of one transition element.
+struct CONTENT_EXPORT TransitionElement {
+  std::string name;
+  gfx::Rect rect;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_COMMON_TRANSITION_ELEMENT_H_