Support accessibility shortcut secondary action (8/n)

Integrate with the multiple shortcut selections and change the behavior as below:
- Get the shortcut type from system provider or shared_prefs if this is first time to use.
- Update the shared_prefs for what user seen.

Bug: 142530063
Bug: 142531156
Test: make RunSettingsRoboTests2
Test: make RunSettingsRoboTests ROBOTEST_FILTER=AccessibilityUtilTest
Change-Id: I58aeb960e2c4aa0bc2432be34c1372c0de89117a

src/com/android/settings/accessibility/AccessibilityUtil.java

@@ -304,6 +304,26 @@ final class AccessibilityUtil {
         return false;
     }
 
+    /**
+     * Gets the corresponding user shortcut type of a given accessibility service.
+     *
+     * @param context The current context.
+     * @param componentName The component name that need to be checked existed in Settings.
+     * @return The user shortcut type if component name existed in {@code UserShortcutType} string
+     * Settings.
+     */
+    static int getUserShortcutTypesFromSettings(Context context,
+            @NonNull ComponentName componentName) {
+        int shortcutTypes = UserShortcutType.DEFAULT;
+        if (hasValuesInSettings(context, UserShortcutType.SOFTWARE, componentName)) {
+            shortcutTypes |= UserShortcutType.SOFTWARE;
+        }
+        if (hasValuesInSettings(context, UserShortcutType.HARDWARE, componentName)) {
+            shortcutTypes |= UserShortcutType.HARDWARE;
+        }
+        return shortcutTypes;
+    }
+
     /**
      * Converts {@link UserShortcutType} to key in Settings.
      *