Check whether Chrome is in VR when showing keyboard accessory.

VR mode does not support keyboard accessories, so they should be
disallowed from appearing while in VR. This CL adds a check to do that.

Bug: 983649
Change-Id: I3fa80224214654060c28ef000bfe5b30ccf82212
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1707428Reviewed-by: Tibor Goldschwendt <tiborg@chromium.org>
Reviewed-by: Friedrich [CET] <fhorschig@chromium.org>
Commit-Queue: Will Cassella <cassew@google.com>
Cr-Commit-Position: refs/heads/master@{#680526}

chrome/android/features/keyboard_accessory/BUILD.gn

@@ -96,6 +96,7 @@ junit_binary("keyboard_accessory_junit_tests") {
     "//base:base_junit_test_support",
     "//chrome/android:chrome_junit_test_support",
     "//chrome/android:chrome_test_util_java",
+    "//components/module_installer/android:module_installer_stub_java",
     "//third_party/junit",
     "//third_party/mockito:mockito_java",
   ]

chrome/android/features/keyboard_accessory/internal/java/src/org/chromium/chrome/browser/keyboard_accessory/ManualFillingMediator.java

@@ -55,6 +55,7 @@ import org.chromium.chrome.browser.tab.Tab.TabHidingType;
 import org.chromium.chrome.browser.tab.TabObserver;
 import org.chromium.chrome.browser.tabmodel.TabModelObserver;
 import org.chromium.chrome.browser.tabmodel.TabModelSelectorTabModelObserver;
+import org.chromium.chrome.browser.vr.VrModuleProvider;
 import org.chromium.components.autofill.AutofillDelegate;
 import org.chromium.components.autofill.AutofillSuggestion;
 import org.chromium.content_public.browser.WebContents;
@@ -427,6 +428,9 @@ class ManualFillingMediator extends EmptyTabObserver
     private boolean canExtendKeyboard() {
         if (!mModel.get(SHOW_WHEN_VISIBLE)) return false;
 
+        // When in VR mode, don't extend the keyboard
+        if (VrModuleProvider.getDelegate().isInVr()) return false;
+
         // Don't open the accessory inside the contextual search panel.
         ContextualSearchManager contextualSearch = mActivity.getContextualSearchManager();
         if (contextualSearch != null && contextualSearch.isSearchPanelOpened()) return false;