Remove NTP Favicon flag.

ios/chrome/browser/about_flags.mm

 // 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.
 
 // Implementation of about_flags for iOS that sets flags based on experimental
 // settings.
 
 #include "ios/chrome/browser/about_flags.h"
 
 #include <stddef.h>
@@ skipping 91 matching lines @@
 
   // Populate command line flag for the AllBookmarks from the
   // configuration plist.
   NSString* enableAllBookmarks = [defaults stringForKey:@"AllBookmarks"];
   if ([enableAllBookmarks isEqualToString:@"Enabled"]) {
     command_line->AppendSwitch(switches::kEnableAllBookmarksView);
   } else if ([enableAllBookmarks isEqualToString:@"Disabled"]) {
     command_line->AppendSwitch(switches::kDisableAllBookmarksView);
   }
 
-  // Populate command line flag for the NTP favicons experiment from the
-  // configuration plist.
-  NSString* enableNTPFavicons = [defaults stringForKey:@"EnableNTPFavicons"];
-  if ([enableNTPFavicons isEqualToString:@"Enabled"]) {
-    command_line->AppendSwitch(switches::kEnableNTPFavicons);
-  } else if ([enableNTPFavicons isEqualToString:@"Disabled"]) {
-    command_line->AppendSwitch(switches::kDisableNTPFavicons);
-  }
-
   // Populate command line flags from PasswordGenerationEnabled.
   NSString* enablePasswordGenerationValue =
       [defaults stringForKey:@"PasswordGenerationEnabled"];
   if ([enablePasswordGenerationValue isEqualToString:@"Enabled"]) {
     command_line->AppendSwitch(switches::kEnableIOSPasswordGeneration);
   } else if ([enablePasswordGenerationValue isEqualToString:@"Disabled"]) {
     command_line->AppendSwitch(switches::kDisableIOSPasswordGeneration);
   }
 
   // Web page replay flags.
@@ skipping 162 matching lines @@
 }
 
 namespace testing {
 
 const flags_ui::FeatureEntry* GetFeatureEntries(size_t* count) {
   *count = arraysize(kFeatureEntries);
   return kFeatureEntries;
 }
 
 }  // namespace testing