(Mac)Views: Widgets focus first View in traversal order if initial focus fails.

ui/views/test/scoped_views_test_helper.h

 // Copyright 2015 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.
 
 #ifndef UI_VIEWS_TEST_SCOPED_VIEWS_TEST_HELPER_H_
 #define UI_VIEWS_TEST_SCOPED_VIEWS_TEST_HELPER_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "ui/gfx/native_widget_types.h"
 
 namespace views {
 
 class PlatformTestHelper;
 class TestViewsDelegate;
 class ViewsTestHelper;
+class Widget;
 
 // Creates a ViewsTestHelper that is destroyed automatically. Acts like
 // ViewsTestBase but allows a test harness to use a different base class, or
 // make use of a TestBrowserThreadBundle, rather than the MessageLoop provided
 // by ViewsTestBase.
 class ScopedViewsTestHelper {
  public:
   // Initialize with the default TestViewsDelegate, MessageLoopForUI::current()
   // and the default test ContextFactory.
   ScopedViewsTestHelper();
 
   // Initialize with the given TestViewsDelegate instance, after setting the
   // ContextFactory.
   explicit ScopedViewsTestHelper(
       std::unique_ptr<TestViewsDelegate> views_delegate);
 
   ~ScopedViewsTestHelper();
 
   // Returns the context for creating new windows. In Aura builds, this will be
   // the RootWindow. Everywhere else, null.
   gfx::NativeWindow GetContext();
 
+  // Call this method to turn on full keyboard access for the given Widget. Note
+  // this is only used on Mac.
+  void SetFullKeyboardAccessState(Widget* widget, bool state);
+
   TestViewsDelegate* views_delegate() { return views_delegate_.get(); };
 
   PlatformTestHelper* platform_test_helper() {
     return platform_test_helper_.get();
   }
 
  private:
   std::unique_ptr<TestViewsDelegate> views_delegate_;
   std::unique_ptr<ViewsTestHelper> test_helper_;
   std::unique_ptr<PlatformTestHelper> platform_test_helper_;
 
   DISALLOW_COPY_AND_ASSIGN(ScopedViewsTestHelper);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_TEST_SCOPED_VIEWS_TEST_HELPER_H_