[vr] Hide content at unsupported feature prompt

Previously this UI would be overlaid atop the content quad, making it
quite hard to read.

Bug: 820261
Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_vr;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
Change-Id: Ib44d055e1774bdbb86c9a18f92d1fbe1d6e17bbb
Reviewed-on: https://chromium-review.googlesource.com/956504
Commit-Queue: Ian Vollick <vollick@chromium.org>
Commit-Queue: Michael Thiessen <mthiesse@chromium.org>
Reviewed-by: Michael Thiessen <mthiesse@chromium.org>
Cr-Commit-Position: refs/heads/master@{#542001}

chrome/browser/vr/elements/ui_element_name.cc

@@ -65,6 +65,7 @@ static const char* g_ui_element_name_strings[] = {
     "kOmniboxOuterLayoutSpacer",
     "kOmniboxShadow",
     "k2dBrowsingVisibiltyControlForVoice",
+    "k2dBrowsingVisibilityControlForPrompt",
     "k2dBrowsingVisibiltyControlForSiteInfoPrompt",
     "k2dBrowsingOpacityControlForAudioPermissionPrompt",
     "k2dBrowsingOpacityControlForNativeDialogPrompt",

chrome/browser/vr/elements/ui_element_name.h

@@ -64,6 +64,7 @@ enum UiElementName {
   kOmniboxOuterLayoutSpacer,
   kOmniboxShadow,
   k2dBrowsingVisibiltyControlForVoice,
+  k2dBrowsingVisibilityControlForPrompt,
   k2dBrowsingVisibiltyControlForSiteInfoPrompt,
   k2dBrowsingOpacityControlForAudioPermissionPrompt,
   k2dBrowsingOpacityControlForNativeDialogPrompt,

chrome/browser/vr/testapp/vr_test_context.cc

@@ -201,6 +201,10 @@ void VrTestContext::HandleInput(ui::Event* event) {
       case ui::DomCode::US_X:
         ui_->OnAppButtonClicked();
         break;
+      case ui::DomCode::US_Q:
+        model_->active_modal_prompt_type =
+            kModalPromptTypeGenericUnsupportedFeature;
+        break;
       default:
         break;
     }

chrome/browser/vr/ui_scene_creator.cc

@@ -720,12 +720,23 @@ void UiSceneCreator::Create2dBrowsingSubtreeRoots() {
   element = Create<UiElement>(k2dBrowsingVisibiltyControlForVoice, kPhaseNone);
   scene_->AddUiElement(k2dBrowsingRepositioner, std::move(element));
 
+  element =
+      Create<UiElement>(k2dBrowsingVisibilityControlForPrompt, kPhaseNone);
+  VR_BIND_VISIBILITY(
+      element,
+      model->active_modal_prompt_type == kModalPromptTypeNone ||
+          model->active_modal_prompt_type ==
+              kModalPromptTypeExitVRForVoiceSearchRecordAudioOsPermission ||
+          model->active_modal_prompt_type == kModalPromptTypeUpdateKeyboard);
+  scene_->AddUiElement(k2dBrowsingVisibiltyControlForVoice, std::move(element));
+
   element = Create<UiElement>(k2dBrowsingVisibiltyControlForSiteInfoPrompt,
                               kPhaseNone);
   VR_BIND_VISIBILITY(element, model->active_modal_prompt_type !=
                                   kModalPromptTypeExitVRForSiteInfo);
 
-  scene_->AddUiElement(k2dBrowsingVisibiltyControlForVoice, std::move(element));
+  scene_->AddUiElement(k2dBrowsingVisibilityControlForPrompt,
+                       std::move(element));
 
   element = Create<UiElement>(k2dBrowsingOpacityControlForAudioPermissionPrompt,
                               kPhaseNone);