[Signin][Mice] Expose MOBILE_IDENTITY_CONSISTENCY flag to Java

This CL exposes MobileIdentityConsistency to Java. It will be used in
subsequent CLs.

Bug: 936953
Change-Id: Iee987b29581109bd223795a507ae3ce7042f009e
Reviewed-on: https://chromium-review.googlesource.com/c/1495514Reviewed-by: David Roger <droger@chromium.org>
Commit-Queue: Boris Sazonov <bsazonov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#636779}

chrome/android/java/src/org/chromium/chrome/browser/ChromeFeatureList.java

@@ -245,6 +245,7 @@ public abstract class ChromeFeatureList {
     public static final String SEARCH_ENGINE_PROMO_EXISTING_DEVICE =
             "SearchEnginePromo.ExistingDevice";
     public static final String SEARCH_ENGINE_PROMO_NEW_DEVICE = "SearchEnginePromo.NewDevice";
+    public static final String MOBILE_IDENTITY_CONSISTENCY = "MobileIdentityConsistency";
     public static final String MODAL_PERMISSION_PROMPTS = "ModalPermissionPrompts";
     public static final String MODAL_PERMISSION_DIALOG_VIEW = "ModalPermissionDialogView";
     public static final String NEW_CONTACTS_PICKER = "NewContactsPicker";

chrome/browser/android/chrome_feature_list.cc

@@ -29,6 +29,7 @@
 #include "components/payments/core/features.h"
 #include "components/previews/core/previews_features.h"
 #include "components/safe_browsing/features.h"
+#include "components/signin/core/browser/account_consistency_method.h"
 #include "components/subresource_filter/core/browser/subresource_filter_features.h"
 #include "components/sync/driver/sync_driver_switches.h"
 #include "components/translate/core/browser/translate_prefs.h"
@@ -192,6 +193,7 @@ const base::Feature* kFeaturesExposedToJava[] = {
     &password_manager::features::kGooglePasswordManager,
     &password_manager::features::kPasswordsKeyboardAccessory,
     &previews::features::kDataSaverLiteModeRebranding,
+    &signin::kMiceFeature,
     &switches::kSyncSendTabToSelf,
     &translate::kTranslateAndroidManualTrigger,
     &unified_consent::kUnifiedConsent,