Upstream Chrome on iOS source code [10/11].

ios/chrome/browser/web/external_app_launcher.h

Index: ios/chrome/browser/web/external_app_launcher.h
diff --git a/ios/chrome/browser/web/external_app_launcher.h b/ios/chrome/browser/web/external_app_launcher.h
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index 0000000000000000000000000000000000000000..f14e23a4845b85adfb76fe8b8eeed04a27287719
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+++ b/ios/chrome/browser/web/external_app_launcher.h
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+// Copyright 2012 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_WEB_EXTERNAL_APP_LAUNCHER_H_
+#define IOS_CHROME_BROWSER_WEB_EXTERNAL_APP_LAUNCHER_H_
+
+#import <UIKit/UIKit.h>
+
+class GURL;
+
+// A customized external app launcher that optionally shows a modal
+// confirmation dialog before switching context to an external application.
+@interface ExternalAppLauncher : NSObject
+
+// Opens URL in an external application if possible (optionally after
+// confirming via dialog in case that user didn't interact using
+// |linkClicked| or if the external application is face time) or returns NO
+// if there is no such application available.
+- (BOOL)openURL:(const GURL&)gURL linkClicked:(BOOL)linkClicked;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_WEB_EXTERNAL_APP_LAUNCHER_H_