VrShell: implement insecure content warning display

chrome/browser/android/vr_shell/vr_shell.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_H_
 #define CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_H_
 
 #include <jni.h>
 #include <memory>
 #include <vector>
@@ skipping 76 matching lines @@
       jint height,
       const base::android::JavaParamRef<jobject>& surface);
 
   // Called from non-render thread to queue a callback onto the render thread.
   // The render thread checks for callbacks and processes them between frames.
   void QueueTask(base::Callback<void()>& callback);
 
  private:
   virtual ~VrShell();
   void LoadUIContent();
+  bool IsUiTextureReady();
+  // Converts a pixel rectangle to (0..1) float texture coordinates.
+  // Callers need to ensure that the texture width/height is
+  // initialized by checking IsUiTextureReady() first.
+  Rectf MakeUiGlCopyRect(Recti pixel_rect);
   void DrawVrShell(const gvr::Mat4f& head_pose);
   void DrawEye(const gvr::Mat4f& view_matrix,
                const gvr::BufferViewport& params);
-  void DrawContentRect();
-  void DrawWebVr();
   void DrawUI(const gvr::Mat4f& render_matrix);
   void DrawCursor(const gvr::Mat4f& render_matrix);
+  void DrawWebVr();
+  void DrawWebVrOverlay(int64_t present_time_nanos);
+  void DrawWebVrEye(const gvr::Mat4f& view_matrix,
+                    const gvr::BufferViewport& params,
+                    int64_t present_time_nanos);
 
   void UpdateController(const gvr::Vec3f& forward_vector);
 
   void HandleQueuedTasks();
 
   // samplerExternalOES texture data for UI content image.
   jint ui_texture_id_ = 0;
   // samplerExternalOES texture data for main content image.
   jint content_texture_id_ = 0;
 
   float desktop_screen_tilt_;
   float desktop_height_;
 
   ContentRectangle* desktop_plane_;
 
   UiScene scene_;
 
   std::unique_ptr<gvr::GvrApi> gvr_api_;
   std::unique_ptr<gvr::BufferViewportList> buffer_viewport_list_;
   std::unique_ptr<gvr::BufferViewport> buffer_viewport_;
   std::unique_ptr<gvr::SwapChain> swap_chain_;
 
   gvr::Sizei render_size_;
-  float cursor_distance_;
 
   std::queue<base::Callback<void()>> task_queue_;
   base::Lock task_queue_lock_;
 
   std::unique_ptr<VrCompositor> content_compositor_;
   content::ContentViewCore* content_cvc_;
   std::unique_ptr<VrCompositor> ui_compositor_;
   content::ContentViewCore* ui_cvc_;
 
   VrShellDelegate* delegate_;
   std::unique_ptr<VrShellRenderer> vr_shell_renderer_;
   base::android::ScopedJavaGlobalRef<jobject> j_vr_shell_;
 
   gvr::Quatf controller_quat_;
   bool controller_active_ = false;
 
   gvr::Vec3f target_point_;
   const ContentRectangle* target_element_ = nullptr;
   int ui_tex_width_ = 0;
   int ui_tex_height_ = 0;
 
   bool webvr_mode_ = false;
   bool webvr_secure_origin_ = false;
+  int64_t webvr_warning_end_nanos_ = 0;
 
   base::WeakPtrFactory<VrShell> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VrShell);
 };
 
 bool RegisterVrShell(JNIEnv* env);
 
 }  // namespace vr_shell
 
 #endif  // CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_H_