[ios showcase] Integrated TextBadgeView with Showcase.

ios/showcase/text_badge_view/text_badge_view_view_controller.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 "ios/showcase/text_badge_view/text_badge_view_view_controller.h"
+
+#import "ios/chrome/browser/ui/reading_list/text_badge_view.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+@implementation TextBadgeViewViewController
+
+- (void)viewDidLoad {
+  [super viewDidLoad];
+  self.view.backgroundColor = [UIColor whiteColor];

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

I suggest that you set this view to another color, such as grey. 
The reason is that the badge will initially not have any color 
or background.

[helenlyang, 2017/07/07 16:31:13]

Done.

+  TextBadgeView* textBadge = [[TextBadgeView alloc] initWithText:@"TEXT"];
+  [self.view addSubview:textBadge];

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

You'll need to set the frame of the badge
otherwise, it will default to CGRectZero.

[helenlyang, 2017/07/07 16:31:13]

Done. 

+}
+
+@end