[vr] Add incognito coloring

chrome/browser/android/vr_shell/ui_scene_manager.cc

Index: chrome/browser/android/vr_shell/ui_scene_manager.cc
diff --git a/chrome/browser/android/vr_shell/ui_scene_manager.cc b/chrome/browser/android/vr_shell/ui_scene_manager.cc
index 4845c90f9e9e21022f1f2de5301cdf72c04b6c76..675506839e7b4dec6426f7ae540cdf9028e9dd66 100644
--- a/chrome/browser/android/vr_shell/ui_scene_manager.cc
+++ b/chrome/browser/android/vr_shell/ui_scene_manager.cc
@@ -255,12 +255,12 @@ void UiSceneManager::CreateBackground() {
   element = base::MakeUnique<UiElement>();
   element->set_debug_id(kFloorGrid);
   element->set_id(AllocateId());
-  element->set_fill(vr_shell::Fill::GRID_GRADIENT);
   element->set_size({kSceneSize, kSceneSize, 1.0});
   element->set_translation({0.0, -kSceneHeight / 2 + kTextureOffset, 0.0});
   element->set_rotation({1.0, 0.0, 0.0, -M_PI / 2});
   element->set_fill(vr_shell::Fill::GRID_GRADIENT);
   element->set_gridline_count(kFloorGridlineCount);
+  element->set_center_color(color_scheme().horizon);

[amp, 2017/05/26 17:48:20]

Aren't all the colors for the background being handled in the
'UpdateBackgroundColor' method now?

[Ian Vollick, 2017/05/27 00:30:18]

Done.

   element->set_draw_phase(0);
   floor_grid_ = element.get();
   content_elements_.push_back(element.get());
@@ -383,6 +383,14 @@ void UiSceneManager::SetWebVrSecureOrigin(bool secure) {
   ConfigureSecurityWarnings();
 }
 
+void UiSceneManager::SetIncognito(bool incognito) {
+  const bool needs_update = incognito != incognito_;
+  incognito_ = incognito;
+  if (needs_update)
+    UpdateBackgroundColor();
+  url_bar_->SetIncognito(incognito);
+}
+
 void UiSceneManager::OnAppButtonClicked() {
   // App button click exits the WebVR presentation and fullscreen.
   browser_->ExitPresent();
@@ -455,8 +463,11 @@ int UiSceneManager::AllocateId() {
 }
 
 const ColorScheme& UiSceneManager::color_scheme() const {
-  return ColorScheme::GetColorScheme(fullscreen_ ? ColorScheme::kModeFullscreen
-                                                 : ColorScheme::kModeNormal);
+  if (incognito_)
+    return ColorScheme::GetColorScheme(ColorScheme::kModeIncognito);
+  if (fullscreen_)
+    return ColorScheme::GetColorScheme(ColorScheme::kModeFullscreen);
+  return ColorScheme::GetColorScheme(ColorScheme::kModeNormal);
 }
 
 }  // namespace vr_shell