[vr] Add incognito coloring

chrome/browser/android/vr_shell/textures/ui_texture.h

Index: chrome/browser/android/vr_shell/textures/ui_texture.h
diff --git a/chrome/browser/android/vr_shell/textures/ui_texture.h b/chrome/browser/android/vr_shell/textures/ui_texture.h
index 0bde0005822998ef5d5519c89a65d25d4ad3ee6a..eef85ceef0c038e2f2e2d1a579e18413972764ff 100644
--- a/chrome/browser/android/vr_shell/textures/ui_texture.h
+++ b/chrome/browser/android/vr_shell/textures/ui_texture.h
@@ -10,6 +10,7 @@
 
 #include "base/macros.h"
 #include "base/strings/string16.h"
+#include "chrome/browser/android/vr_shell/color_scheme.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/size.h"
@@ -39,6 +40,8 @@ class UiTexture {
 
   bool dirty() const { return dirty_; }
 
+  void SetMode(ColorScheme::Mode mode);
+
  protected:
   enum TextAlignment {
     kTextAlignmentNone,
@@ -54,6 +57,9 @@ class UiTexture {
 
   virtual void Draw(SkCanvas* canvas, const gfx::Size& texture_size) = 0;
 
+  virtual void OnSetMode();
+  ColorScheme::Mode mode() const { return mode_; }
+
   // Prepares a set of RenderText objects with the given color and fonts.
   // Attempts to fit the text within the provided size. |flags| specifies how
   // the text should be rendered. If multiline is requested and provided height
@@ -85,6 +91,7 @@ class UiTexture {
 
  private:
   bool dirty_ = true;
+  ColorScheme::Mode mode_ = ColorScheme::kModeNormal;
 
   DISALLOW_COPY_AND_ASSIGN(UiTexture);
 };