Create new ShadowBidiFormatter

- Use the new shadow to work around comparing spannable strings

Test: make RunSettingsRoboTests -j40
Change-Id: I241c5ceab98da2e57f6812a637e677f66fc01a8f

tests/robotests/src/com/android/settings/testutils/shadow/ShadowBidiFormatter.java

@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.testutils.shadow;
+
+import android.support.v4.text.BidiFormatter;
+import android.support.v4.text.TextDirectionHeuristicCompat;
+
+import org.robolectric.annotation.Implements;
+
+@Implements(BidiFormatter.class)
+public class ShadowBidiFormatter {
+
+    public CharSequence unicodeWrap(CharSequence str, TextDirectionHeuristicCompat heuristic,
+            boolean isolate) {
+        return str;
+    }
+}