PROTOTYPE (incomplete): Add quad renderer and stub bits to handle security warnings.

chrome/browser/android/vr_shell/textured_element.h

Index: chrome/browser/android/vr_shell/textured_element.h
diff --git a/chrome/browser/android/vr_shell/textured_element.h b/chrome/browser/android/vr_shell/textured_element.h
new file mode 100644
index 0000000000000000000000000000000000000000..0e343db428f2c4627bcea898c2d74760dccffaa7
--- /dev/null
+++ b/chrome/browser/android/vr_shell/textured_element.h
@@ -0,0 +1,31 @@
+// 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_TEXTURED_ELEMENT_H_
+#define CHROME_BROWSER_ANDROID_VR_SHELL_TEXTURED_ELEMENT_H_
+
+#include "base/macros.h"
+#include "chrome/browser/android/vr_shell/ui_element.h"
+
+namespace vr_shell {
+
+class TexturedElement : public UiElement {
+ public:
+  TexturedElement();
+  ~TexturedElement() override;
+
+  // UiElement interface.
+  bool Render(VrShellRenderer* renderer) const override;
+
+ private:
+  void Draw();
+
+  // SkBitmap bitmap_;

[cjgrant, 2017/04/19 16:24:52]

Either this class, or UITexture itself, should handle the allocation of a GL
texture ID and an SkSurface, I think.  Scene Manager doesn't care, and the
common rendering code should not know about element details.

+
+  DISALLOW_COPY_AND_ASSIGN(TexturedElement);
+};
+
+}  // namespace vr_shell
+
+#endif  // CHROME_BROWSER_ANDROID_VR_SHELL_TEXTURED_ELEMENT_H_