Upstream Chrome on iOS source code [4/11].

ios/chrome/browser/ui/collection_view/cells/activity_indicator_cell.h

Index: ios/chrome/browser/ui/collection_view/cells/activity_indicator_cell.h
diff --git a/ios/chrome/browser/ui/collection_view/cells/activity_indicator_cell.h b/ios/chrome/browser/ui/collection_view/cells/activity_indicator_cell.h
new file mode 100644
index 0000000000000000000000000000000000000000..fa1cfa0672887f4db538b6d66fcc6adf8433e61e
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+++ b/ios/chrome/browser/ui/collection_view/cells/activity_indicator_cell.h
@@ -0,0 +1,20 @@
+// Copyright 2016 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 IOS_CHROME_BROWSER_UI_COLLECTION_VIEW_CELLS_ACTIVITY_INDICATOR_CELL_H_
+#define IOS_CHROME_BROWSER_UI_COLLECTION_VIEW_CELLS_ACTIVITY_INDICATOR_CELL_H_
+
+#import "ios/third_party/material_components_ios/src/components/CollectionCells/src/MaterialCollectionCells.h"
+
+extern const CGFloat kIndicatorSize;
+
+@class MDCActivityIndicator;
+
+// MDCCollectionViewCell that displays an activity indicator.
+@interface ActivityIndicatorCell : MDCCollectionViewCell
+
+@property(nonatomic, strong) MDCActivityIndicator* activityIndicator;
+
+@end
+#endif  // IOS_CHROME_BROWSER_UI_COLLECTION_VIEW_CELLS_ACTIVITY_INDICATOR_CELL_H_