Remove Experimental Flag ExternalAppPromptDisabled

ios/chrome/browser/experimental_flags.mm

 // Copyright 2015 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.
 
 // This file can be empty. Its purpose is to contain the relatively short lived
 // definitions required for experimental flags.
 
 #include "ios/chrome/browser/experimental_flags.h"
 
 #include <dispatch/dispatch.h>
@@ skipping 15 matching lines @@
 #error "This file requires ARC support."
 #endif
 
 namespace {
 
 NSString* const kEnableAlertOnBackgroundUpload =
     @"EnableAlertsOnBackgroundUpload";
 NSString* const kEnableNewClearBrowsingDataUI = @"EnableNewClearBrowsingDataUI";
 NSString* const kEnableStartupCrash = @"EnableStartupCrash";
 NSString* const kEnableViewCopyPasswords = @"EnableViewCopyPasswords";
-NSString* const kExternalAppPromptDisabled = @"ExternalAppPromptDisabled";
 NSString* const kFirstRunForceEnabled = @"FirstRunForceEnabled";
 NSString* const kForceResetContextualSearch = @"ForceResetContextualSearch";
 NSString* const kGaiaEnvironment = @"GAIAEnvironment";
 NSString* const kHeuristicsForPasswordGeneration =
     @"HeuristicsForPasswordGeneration";
 NSString* const kMDMIntegrationDisabled = @"MDMIntegrationDisabled";
 NSString* const kOriginServerHost = @"AlternateOriginServerHost";
 NSString* const kSafariVCSignInDisabled = @"SafariVCSignInDisabled";
 NSString* const kWhatsNewPromoStatus = @"WhatsNewPromoStatus";
 
@@ skipping 45 matching lines @@
   std::string group_name = base::FieldTrialList::FindFullName("IOSAutoReload");
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   if (command_line->HasSwitch(switches::kEnableOfflineAutoReload))
     return true;
   if (command_line->HasSwitch(switches::kDisableOfflineAutoReload))
     return false;
   return base::StartsWith(group_name, "Enabled",
                           base::CompareCase::INSENSITIVE_ASCII);
 }
 
-bool IsExternalApplicationPromptEnabled() {
-  return ![[NSUserDefaults standardUserDefaults]
-      boolForKey:kExternalAppPromptDisabled];
-}
-
 bool IsForceResetContextualSearchEnabled() {
   return [[NSUserDefaults standardUserDefaults]
       boolForKey:kForceResetContextualSearch];
 }
 
 bool IsLRUSnapshotCacheEnabled() {
   // Check if the experimental flag is forced on or off.
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   if (command_line->HasSwitch(switches::kEnableLRUSnapshotCache)) {
     return true;
@@ skipping 150 matching lines @@
   return base::StartsWith(group_name, "Enabled",
                           base::CompareCase::INSENSITIVE_ASCII);
 }
 
 bool IsNativeAppLauncherEnabled() {
   return [[NSUserDefaults standardUserDefaults]
       boolForKey:@"NativeAppLauncherEnabled"];
 }
 
 }  // namespace experimental_flags