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 70 matching lines @@
   void UiSurfaceChanged(
       JNIEnv* env,
       const base::android::JavaParamRef<jobject>& object,
       jint width,
       jint height,
       const base::android::JavaParamRef<jobject>& surface);
 
  private:
   virtual ~VrShell();
   void LoadUIContent();
+  bool IsUiTextureReady();
+  Rectf MakeUiPixelCopyRect(Recti pixel_rect);
   void DrawVrShell(int64_t time);
   void DrawEye(const gvr::Mat4f& view_matrix,
                const gvr::BufferViewport& params);
-  void DrawContentRect();
-  void DrawWebVr();
   void DrawUI();
   void DrawCursor();
+  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();
 
   // 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_;
@@ skipping 26 matching lines @@
   std::unique_ptr<VrShellRenderer> vr_shell_renderer_;
   base::android::ScopedJavaGlobalRef<jobject> j_vr_shell_;
 
   gvr::Quatf controller_quat_;
   bool controller_active_ = false;
   gvr::Vec3f look_at_vector_;
   int ui_tex_width_ = 0;
   int ui_tex_height_ = 0;
 
   bool webvr_mode_ = false;
-  bool webvr_secure_origin_;
+  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_