Update fullscreen ux, make floor and ceiling visible.

chrome/browser/android/vr_shell/ui_scene_manager.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_UI_SCENE_MANAGER_H_
 #define CHROME_BROWSER_ANDROID_VR_SHELL_UI_SCENE_MANAGER_H_
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/timer/timer.h"
 #include "base/values.h"
 #include "chrome/browser/android/vr_shell/ui_interface.h"
+#include "device/vr/vr_types.h"
 
 class GURL;
 
 namespace vr_shell {
 
 class LoadingIndicator;
 class UiElement;
 class UiScene;
 class UrlBar;
 class VrBrowserInterface;
@@ skipping 29 matching lines @@
   void CreateScreenDimmer();
   void CreateSecurityWarnings();
   void CreateSystemIndicators();
   void CreateContentQuad();
   void CreateBackground();
   void CreateUrlBar();
   void CreateCloseButton();
   void CreateExitWarning();
 
   void ConfigureScene();
+  void ConfigureBackgroundColor(vr::Colorf center_color,
+                                vr::Colorf horizon_color);
   void ConfigureSecurityWarnings();
   void OnSecurityWarningTimer();
   void OnBackButtonClicked();
   void OnCloseButtonClicked();
   int AllocateId();
 
   VrBrowserInterface* browser_;
   UiScene* scene_;
 
   // UI element pointers (not owned by the scene manager).
   UiElement* permanent_security_warning_ = nullptr;
   UiElement* transient_security_warning_ = nullptr;
   UiElement* exit_warning_ = nullptr;
   UiElement* main_content_ = nullptr;
   UiElement* audio_capture_indicator_ = nullptr;
   UiElement* video_capture_indicator_ = nullptr;
   UiElement* screen_capture_indicator_ = nullptr;
   UiElement* screen_dimmer_ = nullptr;
+  UiElement* ceiling_ = nullptr;
+  UiElement* floor_ = nullptr;
+  UiElement* floor_grid_ = nullptr;
   UrlBar* url_bar_ = nullptr;
   LoadingIndicator* loading_indicator_ = nullptr;
 
   bool in_cct_;
   bool web_vr_mode_;
   bool secure_origin_ = false;
   bool fullscreen_ = false;
   bool is_exiting_ = false;
 
   int next_available_id_ = 1;
 
   std::vector<UiElement*> content_elements_;
   std::vector<UiElement*> control_elements_;
 
   base::OneShotTimer security_warning_timer_;
 
   base::WeakPtrFactory<UiSceneManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(UiSceneManager);
 };
 
 }  // namespace vr_shell
 
 #endif  // CHROME_BROWSER_ANDROID_VR_SHELL_UI_SCENE_MANAGER_H_