Enable keyboard navigation for Desktopcapture window selection dialog

chrome/browser/ui/views/desktop_media_picker_views_unittest.cc

 // Copyright 2014 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.
 
 #include "base/bind.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/media/fake_desktop_media_list.h"
 #include "chrome/browser/ui/views/desktop_media_picker_views.h"
 #include "components/web_modal/test_web_contents_modal_dialog_host.h"
@@ skipping 167 matching lines @@
 
   GetPickerDialogView()->GetMediaSourceViewForTesting(0)->OnFocus();
   EXPECT_TRUE(
       GetPickerDialogView()->IsDialogButtonEnabled(ui::DIALOG_BUTTON_OK));
 
   media_list_->RemoveSource(0);
   EXPECT_FALSE(
       GetPickerDialogView()->IsDialogButtonEnabled(ui::DIALOG_BUTTON_OK));
 }
 
+// Verifies that the MediaListView get the initial focus

[Sergey Ulanov, 2015/10/01 18:23:11]

nit: add. at the end

[gyzhou, 2015/10/02 18:51:26]

Done.

+TEST_F(DesktopMediaPickerViewsTest, ListViewHasInitialFocus) {
+  EXPECT_TRUE(GetPickerDialogView()->
+      GetMediaListViewForTesting()->HasFocus());

[Sergey Ulanov, 2015/10/01 18:23:11]

nit: don't need to wrap this line - it can all fit in one line.

[gyzhou, 2015/10/02 18:51:26]

Done.

+}
+
 }  // namespace views