Implement UI web contents for Vr Shell

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 17 matching lines @@
 
 namespace vr_shell {
 
 class VrCompositor;
 class VrShellDelegate;
 class VrShellRenderer;
 
 class VrShell : public device::GvrDelegate {
  public:
   VrShell(JNIEnv* env, jobject obj,
-          content::ContentViewCore* content_view_core,
-          ui::WindowAndroid* content_window);
+          content::ContentViewCore* content_cvc,
+          ui::WindowAndroid* content_window,
+          content::ContentViewCore* ui_cvc,
+          ui::WindowAndroid* ui_window);
 
   void UpdateCompositorLayers(JNIEnv* env,
                               const base::android::JavaParamRef<jobject>& obj);
   void Destroy(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
   void SetDelegate(JNIEnv* env,
                    const base::android::JavaParamRef<jobject>& obj,
                    const base::android::JavaParamRef<jobject>& delegate);
   void GvrInit(JNIEnv* env,
                const base::android::JavaParamRef<jobject>& obj,
                jlong native_gvr_api);
   void InitializeGl(JNIEnv* env,
                     const base::android::JavaParamRef<jobject>& obj,
-                    jint texture_data_handle);
+                    jint content_texture_handle,
+                    jint ui_texture_handle);
   void DrawFrame(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
   void OnPause(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
   void OnResume(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
   void SetWebVrMode(JNIEnv* env,
                     const base::android::JavaParamRef<jobject>& obj,
                     bool enabled);
 
   // html/js UI hooks.
   static base::WeakPtr<VrShell> GetWeakPtr();
   void OnDomContentsLoaded();
   void SetUiTextureSize(int width, int height);
 
   // device::GvrDelegate implementation
   void SubmitWebVRFrame() override;
   void UpdateWebVRTextureBounds(
       int eye, float left, float top, float width, float height) override;
   gvr::GvrApi* gvr_api() override;
 
-  void ContentSurfaceDestroyed(
+  void ContentSurfaceChanged(
       JNIEnv* env,
-      const base::android::JavaParamRef<jobject>& object);
-  void ContentSurfaceChanged(
+      const base::android::JavaParamRef<jobject>& object,
+      jint width,
+      jint height,
+      const base::android::JavaParamRef<jobject>& surface);
+  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();
   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 UpdateController();
 
-  // samplerExternalOES texture data for content area image.
+  // 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_;
   gvr::Vec3f desktop_position_;
 
   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::Mat4f view_matrix_;
   gvr::Mat4f projection_matrix_;
 
   gvr::Mat4f head_pose_;
   gvr::Vec3f forward_vector_;
 
   gvr::Sizei render_size_;
   float cursor_distance_;
 
-  std::unique_ptr<VrCompositor> content_compositor_view_;
+  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 look_at_vector_;
   int ui_tex_width_ = 0;
   int ui_tex_height_ = 0;
 
   bool webvr_mode_ = false;
 
   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_