Add the suggestions UI in chrome

ios/chrome/browser/content_suggestions/content_suggestions_coordinator.h

Index: ios/chrome/browser/content_suggestions/content_suggestions_coordinator.h
diff --git a/ios/chrome/browser/content_suggestions/content_suggestions_coordinator.h b/ios/chrome/browser/content_suggestions/content_suggestions_coordinator.h
new file mode 100644
index 0000000000000000000000000000000000000000..9903d12017c5283fd4f911607f31082e76ef9614
--- /dev/null
+++ b/ios/chrome/browser/content_suggestions/content_suggestions_coordinator.h
@@ -0,0 +1,18 @@
+// 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.
+
+#ifndef IOS_CHROME_BROWSER_CONTENT_SUGGESTIONS_CONTENT_SUGGESTIONS_COORDINATOR_H_
+#define IOS_CHROME_BROWSER_CONTENT_SUGGESTIONS_CONTENT_SUGGESTIONS_COORDINATOR_H_
+
+#import "ios/chrome/browser/chrome_coordinator.h"
+
+// Coordinator to manage the Suggestions UI via a SuggestionsViewController.
+@interface ContentSuggestionsCoordinator : ChromeCoordinator
+
+// Whether the Suggestions UI is displayed. If this is true, start is a no-op.
+@property(nonatomic, readonly) BOOL visible;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_CONTENT_SUGGESTIONS_CONTENT_SUGGESTIONS_COORDINATOR_H_