Force export passwords to local storage on Android; fixes brave/brave… (#23901)

Force export passwords to local storage on Android

fixes brave/brave-browser#38655

android/java/apk_for_test.flags

@@ -871,3 +871,13 @@
 -keep class org.chromium.chrome.browser.omnibox.suggestions.editurl.BraveEditUrlSuggestionProcessor {
     public <init>(...);
 }
+
+-keep class org.chromium.chrome.browser.password_manager.settings.ExportFlow {
+    public <init>(...);
+    *** runSharePasswordsIntent(...);
+    *** runCreateFileOnDiskIntent(...);
+}
+
+-keep class org.chromium.chrome.browser.password_manager.settings.BraveExportFlow {
+    public <init>(...);
+}

android/java/org/chromium/chrome/browser/password_manager/settings/BraveExportFlow.java

@@ -0,0 +1,14 @@
+/* Copyright (c) 2024 The Brave Authors. All rights reserved.
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+package org.chromium.chrome.browser.password_manager.settings;
+
+import org.chromium.base.BraveReflectionUtil;
+
+public class BraveExportFlow extends ExportFlow {
+    public void runSharePasswordsIntent() {
+        BraveReflectionUtil.InvokeMethod(ExportFlow.class, this, "runCreateFileOnDiskIntent");
+    }
+}

android/java/proguard.flags

@@ -57,3 +57,7 @@
     *** shouldUseParentIds(...);
     *** getOrCreateTabGroupId(...);
 }
+
+-keep class org.chromium.chrome.browser.password_manager.settings.ExportFlow {
+    *** runCreateFileOnDiskIntent(...);
+}