Android - Introduce "keyboard accessory" for Autofill suggestions.

components/autofill/core/common/autofill_switches.cc

 // Copyright 2013 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 "components/autofill/core/common/autofill_switches.h"
 
 namespace autofill {
 namespace switches {
 
 // Disables using device's camera to scan a new credit card when filling out a
@@ skipping 10 matching lines @@
 const char kDisableOfferStoreUnmaskedWalletCards[] =
     "disable-offer-store-unmasked-wallet-cards";
 
 // Disables password generation when we detect that the user is going through
 // account creation.
 const char kDisablePasswordGeneration[]     = "disable-password-generation";
 
 // The "disable" flag for kEnableSingleClickAutofill.
 const char kDisableSingleClickAutofill[]    = "disable-single-click-autofill";
 
+const char kEnableAccessorySuggestionView[] =
+    "enable-autofill-keyboard-accessory-view";
+
 // Enables using device's camera to scan a new credit card when filling out a
 // credit card form.
 const char kEnableCreditCardScan[]          = "enable-credit-card-scan";
 
 // Enables the experiment for the password manager to only fill on account
 // selection, rather than autofilling on page load, with highlighting of fields.
 const char kEnableFillOnAccountSelect[]     = "enable-fill-on-account-select";
 
 // Enables the experiment for the password manager to only fill on account
 // selection, rather than autofilling on page load, with no highlighting of
@@ skipping 35 matching lines @@
 
 // Service URL for Online Wallet service. Used as the base url for Online Wallet
 // API calls.
 const char kWalletServiceUrl[]              = "wallet-service-url";
 
 // Use the sandbox Online Wallet service URL (for developer testing).
 const char kWalletServiceUseSandbox[]       = "wallet-service-use-sandbox";
 
 }  // namespace switches
 }  // namespace autofill