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

chrome/browser/android/vr_shell/vr_shell_renderer.h

 // 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 CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_RENDERER_H_
 #define CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_RENDERER_H_
 
 #include <memory>
 #include <queue>
 #include <vector>
@@ skipping 19 matching lines @@
   RETICLE_VERTEX_SHADER,
   RETICLE_FRAGMENT_SHADER,
   LASER_VERTEX_SHADER,
   LASER_FRAGMENT_SHADER,
   GRADIENT_QUAD_VERTEX_SHADER,
   GRADIENT_QUAD_FRAGMENT_SHADER,
   GRADIENT_GRID_VERTEX_SHADER,
   GRADIENT_GRID_FRAGMENT_SHADER,
   CONTROLLER_VERTEX_SHADER,
   CONTROLLER_FRAGMENT_SHADER,
+  SKIA_QUAD_VERTEX_SHADER,
+  SKIA_QUAD_FRAGMENT_SHADER,
   SHADER_ID_MAX
 };
 
 struct Vertex3d {
   float x;
   float y;
   float z;
 };
 
 struct RectF {
@@ skipping 62 matching lines @@
   GLuint model_view_proj_matrix_handle_;
   GLuint copy_rect_uniform_handle_;
   GLuint tex_uniform_handle_;
   GLuint opacity_handle_;
 
   std::queue<TexturedQuad> quad_queue_;
 
   DISALLOW_COPY_AND_ASSIGN(TexturedQuadRenderer);
 };
 
+class SkiaQuadRenderer : public BaseQuadRenderer {
+ public:
+  SkiaQuadRenderer();
+  ~SkiaQuadRenderer() override;
+
+  // Draw the content rect in the texture quad.
+  void Draw(int texture_data_handle,
+               const vr::Mat4f& view_proj_matrix,
+               const gfx::RectF& copy_rect,
+               float opacity);
+
+ private:
+  GLuint model_view_proj_matrix_handle_;
+  GLuint copy_rect_uniform_handle_;
+  GLuint tex_uniform_handle_;
+  GLuint opacity_handle_;
+
+  DISALLOW_COPY_AND_ASSIGN(SkiaQuadRenderer);
+};
+
 // Renders a page-generated stereo VR view.
 class WebVrRenderer : public BaseQuadRenderer {
  public:
   WebVrRenderer();
   ~WebVrRenderer() override;
 
   void Draw(int texture_handle);
 
  private:
   GLuint tex_uniform_handle_;
@@ skipping 151 matching lines @@
   std::unique_ptr<ControllerRenderer> controller_renderer_;
   std::unique_ptr<GradientQuadRenderer> gradient_quad_renderer_;
   std::unique_ptr<GradientGridRenderer> gradient_grid_renderer_;
 
   DISALLOW_COPY_AND_ASSIGN(VrShellRenderer);
 };
 
 }  // namespace vr_shell
 
 #endif  // CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_RENDERER_H_