[ios showcase] Integrated TextBadgeView with Showcase.

ios/showcase/text_badge_view/text_badge_view_egtest.mm

+// Copyright 2017 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.
+
+#import <EarlGrey/EarlGrey.h>
+
+#import "ios/showcase/test/showcase_eg_utils.h"
+#import "ios/showcase/test/showcase_test_case.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+namespace {
+using ::showcase_utils::Open;
+using ::showcase_utils::Close;
+}
+
+@interface TextBadgeViewTestCase : ShowcaseTestCase
+@end
+
+@implementation TextBadgeViewTestCase
+
+- (void)setUp {
+  [super setUp];
+  Open(@"TextBadgeView");

[edchin, 2017/07/07 04:38:04]

Please just put the open and close directly 
into the test (since it's just a single test).

[helenlyang, 2017/07/07 16:31:12]

Done.

+}
+
+- (void)tearDown {
+  Close();
+  [super tearDown];
+}
+
+// Tests that the accessibility label matches the display text.
+- (void)testTextBadgeAccessibilityLabel {
+}
+
+@end