[vr] Add incognito coloring

chrome/browser/android/vr_shell/ui_elements/ui_element.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_ELEMENTS_UI_ELEMENT_H_
 #define CHROME_BROWSER_ANDROID_VR_SHELL_UI_ELEMENTS_UI_ELEMENT_H_
 
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
+#include "chrome/browser/android/vr_shell/color_scheme.h"
 #include "chrome/browser/android/vr_shell/ui_elements/ui_element_debug_id.h"
 #include "device/vr/vr_types.h"
 #include "third_party/skia/include/core/SkColor.h"
 
 namespace base {
 class TimeTicks;
 }
 
 namespace vr_shell {
 
@@ skipping 213 matching lines @@
   void set_dirty(bool dirty) { dirty_ = dirty; }
 
   // A flag usable during transformation calculates to avoid duplicate work.
   UiElementDebugId debug_id() const { return debug_id_; }
   void set_debug_id(UiElementDebugId debug_id) { debug_id_ = debug_id; }
 
   // By default, sets an element to be visible or not. This may be overridden to
   // allow finer control of element visibility.
   virtual void SetEnabled(bool enabled);
 
+  void SetMode(ColorScheme::Mode mode);
+  ColorScheme::Mode mode() const { return mode_; }
+
+ protected:
+  virtual void OnSetMode();
+
  private:
   // Valid IDs are non-negative.
   int id_ = -1;
 
   // If a non-negative parent ID is specified, applicable transformations
   // are applied relative to the parent, rather than absolutely.
   int parent_id_ = -1;
 
   // If true, this object will be visible.
   bool visible_ = false;
@@ skipping 53 matching lines @@
   Transform inheritable_transform_;
 
   // A flag usable during transformation calculates to avoid duplicate work.
   bool dirty_ = false;
 
   // An identifier used for testing and debugging, in lieu of a string.
   UiElementDebugId debug_id_ = UiElementDebugId::kNone;
 
   Transform transform_;
 
+  ColorScheme::Mode mode_ = ColorScheme::kModeNormal;
+
   DISALLOW_COPY_AND_ASSIGN(UiElement);
 };
 
 }  // namespace vr_shell
 
 #endif  // CHROME_BROWSER_ANDROID_VR_SHELL_UI_ELEMENTS_UI_ELEMENT_H_