Re-fact TranslateMenuHelper.

chrome/android/java/src/org/chromium/chrome/browser/infobar/translate/TranslateMenu.java

Index: chrome/android/java/src/org/chromium/chrome/browser/infobar/translate/TranslateMenu.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/infobar/translate/TranslateMenu.java b/chrome/android/java/src/org/chromium/chrome/browser/infobar/translate/TranslateMenu.java
new file mode 100644
index 0000000000000000000000000000000000000000..a61c6e1230ececdf0724cd3c3c3ade29e2881ff1
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/infobar/translate/TranslateMenu.java
@@ -0,0 +1,76 @@
+// Copyright 2017 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.
+
+package org.chromium.chrome.browser.infobar.translate;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Translate menu config and its item entity definition.
+ */
+public final class TranslateMenu {
+    /**
+     * The menu item entity.
+     */
+    static final class MenuItem {
+        public final int mType;
+        public final int mId;
+        public final String mCode;
+
+        MenuItem(int itemType, int itemId) {
+            this(itemType, itemId, EMPTY_STRING);
+        }
+
+        MenuItem(int itemType, int itemId, String code) {
+            mType = itemType;
+            mId = itemId;
+            mCode = code;
+        }
+    }
+
+    public static final String EMPTY_STRING = "";
+
+    // Menu type config.
+    public static final int MENU_OVERFLOW = 0;
+    public static final int MENU_TARGET_LANGUAGE = 1;
+    public static final int MENU_SOURCE_LANGUAGE = 2;
+
+    // Menu item type config.
+    public static final int ITEM_DIVIDER = 0;
+    public static final int ITEM_LANGUAGE = 1;
+    public static final int ITEM_TEXT_OPTION = 2;
+    public static final int ITEM_CHECKBOX_OPTION = 3;
+    public static final int MENU_ITEM_TYPE_COUNT = 4;
+
+    // Menu Item ID config for MENU_OVERFLOW .
+    public static final int ID_UNDEFINED = 0;
+    public static final int ID_OVERFLOW_MORE_LANGUAGE = 1;
+    public static final int ID_OVERFLOW_ALWAYS_TRANSLATE = 2;
+    public static final int ID_OVERFLOW_NEVER_SITE = 3;
+    public static final int ID_OVERFLOW_NEVER_LANGUAGE = 4;
+    public static final int ID_OVERFLOW_NOT_THIS_LANGUAGE = 5;
+
+    public static final List<MenuItem> OVERFLOW_MENU = new ArrayList<MenuItem>();
+
+    /**
+     * Build overflow menu item list.
+     */
+    static List<MenuItem> getOverflowMenu() {
+        // Load overflow menu item if it's empty.
+        synchronized (OVERFLOW_MENU) {
+            if (OVERFLOW_MENU.isEmpty()) {
+                OVERFLOW_MENU.add(new MenuItem(ITEM_TEXT_OPTION, ID_OVERFLOW_MORE_LANGUAGE));
+                OVERFLOW_MENU.add(new MenuItem(ITEM_DIVIDER, ID_UNDEFINED));
+                OVERFLOW_MENU.add(new MenuItem(ITEM_CHECKBOX_OPTION, ID_OVERFLOW_ALWAYS_TRANSLATE));
+                OVERFLOW_MENU.add(new MenuItem(ITEM_TEXT_OPTION, ID_OVERFLOW_NEVER_LANGUAGE));
+                OVERFLOW_MENU.add(new MenuItem(ITEM_TEXT_OPTION, ID_OVERFLOW_NEVER_SITE));
+                OVERFLOW_MENU.add(new MenuItem(ITEM_TEXT_OPTION, ID_OVERFLOW_NOT_THIS_LANGUAGE));
+            }
+        }
+        return OVERFLOW_MENU;
+    }
+
+    private TranslateMenu() {}
+}