Hook up insecure content warnings for http webVR presentation.

chrome/browser/android/vr_shell/ui_elements/transient_security_warning.h

+// Copyright 2017 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 CHROME_BROWSER_ANDROID_VR_SHELL_UI_ELEMENTS_TRANSIENT_SECURITY_WARNING_H_
+#define CHROME_BROWSER_ANDROID_VR_SHELL_UI_ELEMENTS_TRANSIENT_SECURITY_WARNING_H_
+
+#include <memory>
+
+#include "base/macros.h"
+#include "chrome/browser/android/vr_shell/ui_elements/textured_element.h"
+
+namespace vr_shell {
+
+class UiTexture;
+
+class TransientSecurityWarning : public TexturedElement {
+ public:
+  explicit TransientSecurityWarning(int preferred_width);
+  ~TransientSecurityWarning() override;
+
+ private:
+  UiTexture* GetTexture() const override;
+  std::unique_ptr<UiTexture> texture_;
+
+  DISALLOW_COPY_AND_ASSIGN(TransientSecurityWarning);
+};
+
+}  // namespace vr_shell
+
+#endif  // CHROME_BROWSER_ANDROID_VR_SHELL_UI_ELEMENTS_TRANSIENT_SECURITY_WARNING_H_