[vr] Add incognito coloring

chrome/browser/android/vr_shell/ui_scene.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_H_
 #define CHROME_BROWSER_ANDROID_VR_SHELL_UI_SCENE_H_
 
 #include <memory>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
+#include "chrome/browser/android/vr_shell/color_scheme.h"
 #include "chrome/browser/android/vr_shell/ui_elements/ui_element_debug_id.h"
 #include "third_party/skia/include/core/SkColor.h"
 
 namespace base {
 class ListValue;
 class TimeTicks;
 }
 
 namespace vr_shell {
 
@@ skipping 36 matching lines @@
   const std::vector<std::unique_ptr<UiElement>>& GetUiElements() const;
 
   UiElement* GetUiElementById(int element_id) const;
   UiElement* GetUiElementByDebugId(UiElementDebugId debug_id) const;
 
   std::vector<const UiElement*> GetWorldElements() const;
   std::vector<const UiElement*> GetOverlayElements() const;
   std::vector<const UiElement*> GetHeadLockedElements() const;
   bool HasVisibleHeadLockedElements() const;
 
-  void SetBackgroundColor(const SkColor& color);
-  const SkColor& GetBackgroundColor() const;
+  void SetMode(ColorScheme::Mode mode);
+  ColorScheme::Mode mode() const;
+
+  SkColor GetBackgroundColor() const;
+
   void SetBackgroundDistance(float distance);

[amp, 2017/05/27 00:47:47]

I think there is some overlap with the word 'background' now.

Perhaps we should change the non-text background to be something like
'environment'?

[Ian Vollick, 2017/05/27 01:29:12]

Hmm. Perhaps we should change the others to text_background and text_foreground?

It'd be good to discuss some possible names next week.

   float GetBackgroundDistance() const;
 
   bool GetWebVrRenderingEnabled() const;
   void SetWebVrRenderingEnabled(bool enabled);
 
   bool is_exiting() const { return is_exiting_; }
   void set_is_exiting();
 
   void OnGLInitialized();
 
  private:
   void Animate(const base::TimeTicks& current_time);
   void ApplyRecursiveTransforms(UiElement* element);
 
   std::vector<std::unique_ptr<UiElement>> ui_elements_;
   UiElement* content_element_ = nullptr;
-  SkColor background_color_ = 0xFF1A1A1A;
+  ColorScheme::Mode mode_ = ColorScheme::kModeNormal;
+
   float background_distance_ = 10.0f;
   bool webvr_rendering_enabled_ = true;
   bool gl_initialized_ = false;
   bool is_exiting_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(UiScene);
 };
 
 }  // namespace vr_shell
 
 #endif  // CHROME_BROWSER_ANDROID_VR_SHELL_UI_SCENE_H_