[ios] Workaround error affecting 3rd party keyboards and omnibox.

ios/chrome/browser/chrome_switches.cc

 // 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.
 
 #include "ios/chrome/browser/chrome_switches.h"
 
 namespace switches {
 
 // -----------------------------------------------------------------------------
 // When commenting your switch, please use the same voice as surrounding
@@ skipping 41 matching lines @@
 
 // Disables the Suggestions UI
 const char kDisableSuggestionsUI[] = "disable-suggestions-ui";
 
 // Disables bookmark reordering.
 const char kDisableBookmarkReordering[] = "disable-bookmark-reordering";
 
 // Disables the WKBackForwardList based navigation manager experiment.
 const char kDisableSlimNavigationManager[] = "disable-slim-navigation-manager";
 
+// Disables the 3rd party keyboard omnibox workaround.
+const char kDisableThirdPartyKeyboardWorkaround[] =
+    "disable-third-party-keyboard-workaround";
+
 // Enables Contextual Search.
 const char kEnableContextualSearch[] = "enable-contextual-search";
 
 // Enables a workaround for fast inset updates for UIWebView.scrollView.
 const char kEnableIOSFastWebScrollViewInsets[] =
     "enable-fast-web-scroll-view-insets";
 
 // Lists separated by commas the name of features to disable.
 // See base::FeatureList::InitializeFromCommandLine for details.
 const char kEnableIOSFeatures[] = "enable-features";
@@ skipping 26 matching lines @@
 
 // Enables the Suggestions UI
 const char kEnableSuggestionsUI[] = "enable-suggestions-ui";
 
 // Enables bookmark reordering.
 const char kEnableBookmarkReordering[] = "enable-bookmark-reordering";
 
 // Enables the WKBackForwardList based navigation manager experiment.
 const char kEnableSlimNavigationManager[] = "enable-slim-navigation-manager";
 
+// Enables the 3rd party keyboard omnibox workaround.
+const char kEnableThirdPartyKeyboardWorkaround[] =
+    "enable-third-party-keyboard-workaround";
+
 // Forces additional Chrome Variation Ids that will be sent in X-Client-Data
 // header, specified as a 64-bit encoded list of numeric experiment ids. Ids
 // prefixed with the character "t" will be treated as Trigger Variation Ids.
 const char kIOSForceVariationIds[] = "force-variation-ids";
 
 // A string used to override the default user agent with a custom one.
 const char kUserAgent[] = "user-agent";
 
 // These mappings only apply to the host resolver.
 const char kIOSHostResolverRules[] = "host-resolver-rules";
 
 // Ignores certificate-related errors.
 const char kIOSIgnoreCertificateErrors[] = "ignore-certificate-errors";
 
 // Allows for forcing socket connections to http/https to use fixed ports.
 const char kIOSTestingFixedHttpPort[] = "testing-fixed-http-port";
 const char kIOSTestingFixedHttpsPort[] = "testing-fixed-https-port";
 
 }  // namespace switches