[Android] Upstream org.chromium.base.test.UrlUtils (partially) and device files

base/android/javatests/src/org/chromium/base/test/UrlUtils.java

Index: base/android/javatests/src/org/chromium/base/test/UrlUtils.java
diff --git a/base/android/javatests/src/org/chromium/base/test/UrlUtils.java b/base/android/javatests/src/org/chromium/base/test/UrlUtils.java
new file mode 100644
index 0000000000000000000000000000000000000000..924cbbce4ed901b70e739d7c3763ee76bd8d1464
--- /dev/null
+++ b/base/android/javatests/src/org/chromium/base/test/UrlUtils.java
@@ -0,0 +1,23 @@
+// Copyright (c) 2012 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.base.test;
+
+import org.chromium.base.PathUtils;
+
+/**
+ * Collection of URL utilities.
+ */
+public class UrlUtils {
+    private final static String DATA_DIR = "/chrome/test/data/";
+
+    /**
+     * Construct a suitable URL for loading a test data file.
+     *
+     * @param path Pathname relative to external/chrome/testing/data
+     */
+    public static String getTestFileUrl(String path) {
+        return "file://" + PathUtils.getExternalStorageDirectory() + DATA_DIR + path;
+    }
+}