Removed IsNativeAppLauncherEnabled() experiment

ios/web/public/web_state/ui/crw_web_delegate.h

 // 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_WEB_PUBLIC_WEB_STATE_UI_CRW_WEB_DELEGATE_H_
 #define IOS_WEB_PUBLIC_WEB_STATE_UI_CRW_WEB_DELEGATE_H_
 
 #include <stdint.h>
 #import <UIKit/UIKit.h>
 #include <vector>
@@ skipping 52 matching lines @@
 - (BOOL)webController:(CRWWebController*)webController
         shouldOpenURL:(const GURL&)url
       mainDocumentURL:(const GURL&)mainDocumentURL
           linkClicked:(BOOL)linkClicked;
 
 // Called to ask if external URL should be opened. External URL is one that
 // cannot be presented by CRWWebController.
 - (BOOL)webController:(CRWWebController*)webController
     shouldOpenExternalURL:(const GURL&)URL;
 
-// Called when |URL| is deemed suitable to be opened in a matching native app.
-// Needs to return whether |URL| was opened in a matching native app.
-// Also triggering user action |linkClicked| is passed to use it when needed.
-// The return value indicates if the native app was launched, not if a native
-// app was found.
-- (BOOL)urlTriggersNativeAppLaunch:(const GURL&)URL
-                         sourceURL:(const GURL&)sourceURL
-                       linkClicked:(BOOL)linkClicked;
-
 // Called to ask the delegate for a controller to display the given url,
 // which contained content that the UIWebView couldn't display. Returns
 // the native controller to display if the delegate can handle the url,
 // or nil otherwise.
 - (id<CRWNativeContent>)controllerForUnhandledContentAtURL:(const GURL&)url;
 
 // Called to retrieve the height of any header that is overlaying on top of the
 // web view. This can be used to implement, for e.g. a toolbar that changes
 // height dynamically. Returning a non-zero height affects the visible frame
 // shown by the CRWWebController. 0.0 is assumed if not implemented.
 - (CGFloat)headerHeightForWebController:(CRWWebController*)webController;
 
 // Called when a PassKit file is downloaded. |data| should be the data from a
 // PassKit file, but this is not guaranteed, and the delegate is responsible for
 // error handling non PassKit data using -[PKPass initWithData:error:]. If the
 // download does not successfully complete, |data| will be nil.
 - (void)webController:(CRWWebController*)webController
     didLoadPassKitObject:(NSData*)data;
 
 @end
 
 #endif  // IOS_WEB_PUBLIC_WEB_STATE_UI_CRW_WEB_DELEGATE_H_