Make full-form autofill the only implementation on iOS.

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>
 #include <stdint.h>
 #import <UIKit/UIKit.h>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/singleton.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/sys_info.h"
-#include "components/autofill/core/common/autofill_switches.h"
 #include "components/dom_distiller/core/dom_distiller_switches.h"
 #include "components/flags_ui/feature_entry.h"
 #include "components/flags_ui/feature_entry_macros.h"
 #include "components/flags_ui/flags_storage.h"
 #include "components/flags_ui/flags_ui_switches.h"
 #include "components/strings/grit/components_strings.h"
 #include "components/sync_driver/sync_driver_switches.h"
 #include "google_apis/gaia/gaia_switches.h"
 #include "ios/chrome/browser/chrome_switches.h"
 #include "ios/chrome/grit/ios_strings.h"
@@ skipping 104 matching lines @@
     command_line->AppendSwitchASCII(switches::kIOSTestingFixedHttpPort, "80");
     command_line->AppendSwitchASCII(switches::kIOSTestingFixedHttpsPort, "443");
     command_line->AppendSwitchASCII(
         switches::kIOSHostResolverRules,
         "MAP * " + base::SysNSStringToUTF8(webPageReplayProxy));
   }
 
   if ([defaults boolForKey:@"EnableCredentialManagement"])
     command_line->AppendSwitch(switches::kEnableCredentialManagerAPI);
 
-  // Populate command line flags from FullFormAutofill.
-  NSString* fullFormAutofillValue = [defaults stringForKey:@"FullFormAutofill"];
-  if ([fullFormAutofillValue isEqualToString:@"Enabled"]) {
-    command_line->AppendSwitch(autofill::switches::kEnableFullFormAutofillIOS);
-  } else if ([fullFormAutofillValue isEqualToString:@"Disabled"]) {
-    command_line->AppendSwitch(autofill::switches::kDisableFullFormAutofillIOS);
-  }
-
   NSString* autoReloadEnabledValue =
       [defaults stringForKey:@"AutoReloadEnabled"];
   if ([autoReloadEnabledValue isEqualToString:@"Enabled"]) {
     command_line->AppendSwitch(switches::kEnableOfflineAutoReload);
   } else if ([autoReloadEnabledValue isEqualToString:@"Disabled"]) {
     command_line->AppendSwitch(switches::kDisableOfflineAutoReload);
   }
 
   // Populate command line flags from EnableFastWebScrollViewInsets.
   NSString* enableFastWebScrollViewInsets =
@@ skipping 128 matching lines @@
 }
 
 namespace testing {
 
 const flags_ui::FeatureEntry* GetFeatureEntries(size_t* count) {
   *count = arraysize(kFeatureEntries);
   return kFeatureEntries;
 }
 
 }  // namespace testing