Modified tab change to work with status tray change

The status tray change made it so that a view must be accessiblity focusable to be read. Tabs are now accessibility focusable so now they will be read with the status tray change.

Review URL: https://codereview.chromium.org/414203002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@285795 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/ui/views/accessibility/accessibility_event_router_views.cc

@@ -604,8 +604,10 @@ std::string AccessibilityEventRouterViews::RecursiveGetStaticText(
 // static
 views::View* AccessibilityEventRouterViews::FindFirstAccessibleAncestor(
     views::View* view) {
-  while (view->parent() && !view->IsAccessibilityFocusable()) {
-    view = view->parent();
-  }
+  views::View* temp_view = view;
+  while (temp_view->parent() && !temp_view->IsAccessibilityFocusable())
+    temp_view = temp_view->parent();
+  if (temp_view->IsAccessibilityFocusable())
+    return temp_view;
   return view;
 }

chrome/browser/ui/views/accessibility/accessibility_event_router_views.h

@@ -67,6 +67,8 @@ class AccessibilityEventRouterViews : public content::NotificationObserver {
                            TestFocusNotification);
   FRIEND_TEST_ALL_PREFIXES(AccessibilityEventRouterViewsTest,
                            MenuIndexAndCountForInvisibleMenu);
+  FRIEND_TEST_ALL_PREFIXES(AccessibilityEventRouterViewsTest,
+                           AccessibilityFocusableView);
 
   AccessibilityEventRouterViews();
   virtual ~AccessibilityEventRouterViews();

chrome/browser/ui/views/accessibility/accessibility_event_router_views_unittest.cc

@@ -424,6 +424,32 @@ TEST_F(AccessibilityEventRouterViewsTest, AlertsFromWindowAndControl) {
   window->CloseNow();
 }
 
+TEST_F(AccessibilityEventRouterViewsTest, AccessibilityFocusableView) {
+  // Create a view with a child view.
+  views::View* parent = new views::View();
+  views::View* child = new views::View();
+  parent->AddChildView(child);
+
+  // Put the view in a window.
+  views::Widget* window = CreateWindowWithContents(parent);
+
+  // Since the child view has no accessiblity focusable ancestors, this
+  // should still be the child view.
+  views::View* accessible_view =
+      AccessibilityEventRouterViews::FindFirstAccessibleAncestor(child);
+  EXPECT_EQ(accessible_view, child);
+
+  // Now make the parent view accessiblity focusable. Calling
+  // FindFirstAccessibleAncestor() again on child shoudl return the parent
+  // view.
+  parent->SetAccessibilityFocusable(true);
+  accessible_view =
+      AccessibilityEventRouterViews::FindFirstAccessibleAncestor(child);
+  EXPECT_EQ(accessible_view, parent);
+
+  window->CloseNow();
+}
+
 namespace {
 
 class SimpleMenuDelegate : public ui::SimpleMenuModel::Delegate {