[vr] Add incognito coloring

chrome/browser/android/vr_shell/ui_scene_manager.cc

 // Copyright 2017 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.
 
 #include "chrome/browser/android/vr_shell/ui_scene_manager.h"
 
 #include "base/callback.h"
 #include "base/memory/ptr_util.h"
 #include "chrome/browser/android/vr_shell/color_scheme.h"
 #include "chrome/browser/android/vr_shell/textures/close_button_texture.h"
@@ skipping 237 matching lines @@
   element->set_fill(vr_shell::Fill::OPAQUE_GRADIENT);
   element->set_draw_phase(0);
   ceiling_ = element.get();
   content_elements_.push_back(element.get());
   scene_->AddUiElement(std::move(element));
 
   // Floor grid.
   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());
   scene_->AddUiElement(std::move(element));
 
   UpdateBackgroundColor();
 }
 
 void UiSceneManager::CreateUrlBar() {
   // TODO(cjgrant): Incorporate final size and position.
@@ skipping 102 matching lines @@
 
 void UiSceneManager::SetScreenCapturingIndicator(bool enabled) {
   // TODO(asimjour) add the indicator and change the visibility here.
 }
 
 void UiSceneManager::SetWebVrSecureOrigin(bool secure) {
   secure_origin_ = 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();
   browser_->ExitFullscreen();
 }
 
 void UiSceneManager::OnAppButtonGesturePerformed(
     UiInterface::Direction direction) {}
 
 void UiSceneManager::SetFullscreen(bool fullscreen) {
@@ skipping 52 matching lines @@
 
 void UiSceneManager::OnCloseButtonClicked() {
   browser_->ExitCct();
 }
 
 int UiSceneManager::AllocateId() {
   return next_available_id_++;
 }
 
 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