Upstream Chrome on iOS source code [1/11].

ios/chrome/app/application_delegate/tab_switching.h

Index: ios/chrome/app/application_delegate/tab_switching.h
diff --git a/ios/chrome/app/application_delegate/tab_switching.h b/ios/chrome/app/application_delegate/tab_switching.h
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index 0000000000000000000000000000000000000000..b3bca346634de1ec54f533b8bb6a95063094d6c6
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+++ b/ios/chrome/app/application_delegate/tab_switching.h
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+// 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_APP_APPLICATION_DELEGATE_TAB_SWITCHING_H_
+#define IOS_CHROME_APP_APPLICATION_DELEGATE_TAB_SWITCHING_H_
+
+#import <UIKit/UIKit.h>
+
+@protocol TabSwitcher;
+
+// Handles TabSwitcher interactions.
+@protocol TabSwitching<NSObject>
+
+// Opens a new tab with animation if presenting the tab switcher.
+// Returns whether it opened a new tab.
+- (BOOL)openNewTabFromTabSwitcher;
+
+@end
+
+#endif  // IOS_CHROME_APP_APPLICATION_DELEGATE_TAB_SWITCHING_H_