Fix WebView accessibility

chrome/browser/apps/guest_view/web_view_browsertest.cc

Index: chrome/browser/apps/guest_view/web_view_browsertest.cc
diff --git a/chrome/browser/apps/guest_view/web_view_browsertest.cc b/chrome/browser/apps/guest_view/web_view_browsertest.cc
index 8c4f9db408c4d34299f5f513774f89ef338b387b..f4e2ee1127008fe6e04d14519dd72c9e05f99eee 100644
--- a/chrome/browser/apps/guest_view/web_view_browsertest.cc
+++ b/chrome/browser/apps/guest_view/web_view_browsertest.cc
@@ -2705,6 +2705,35 @@ IN_PROC_BROWSER_TEST_P(WebViewTest, LoadWebviewAccessibleResource) {
              "web_view/load_webview_accessible_resource", NEEDS_TEST_SERVER);
 }
 
+IN_PROC_BROWSER_TEST_P(WebViewTest, FocusAccessibility) {
+  LoadAppWithGuest("web_view/focus_accessibility");
+  content::WebContents* web_contents = GetFirstAppWindowWebContents();
+  content::EnableAccessibilityForWebContents(web_contents);
+  content::WebContents* guest_web_contents = GetGuestWebContents();
+  content::EnableAccessibilityForWebContents(guest_web_contents);
+
+  // Wait for focus to land on the "root web area" role, representing
+  // focus on the main document itself.
+  while (content::GetFocusedAccessibilityNodeInfo(web_contents).role !=
+             ui::AX_ROLE_ROOT_WEB_AREA) {
+    content::WaitForAccessibilityFocusChange();
+  }
+
+  // Now keep pressing the Tab key until focus lands on a button.
+  while (content::GetFocusedAccessibilityNodeInfo(web_contents).role !=
+             ui::AX_ROLE_BUTTON) {
+    content::SimulateKeyPress(
+        web_contents, ui::VKEY_TAB, false, false, false, false);
+    content::WaitForAccessibilityFocusChange();
+  }
+
+  // Ensure that we hit the button inside the guest frame labeled
+  // "Guest button".
+  ui::AXNodeData node_data =
+      content::GetFocusedAccessibilityNodeInfo(web_contents);
+  EXPECT_EQ("Guest button", node_data.GetStringAttribute(ui::AX_ATTR_NAME));
+}
+
 class WebViewGuestScrollTest
     : public WebViewTestBase,
       public testing::WithParamInterface<testing::tuple<bool, bool>> {