Implement word wrapping and panning in multiline Braille.

chrome/browser/resources/chromeos/chromevox/testing/assert_additions.js

Index: chrome/browser/resources/chromeos/chromevox/testing/assert_additions.js
diff --git a/chrome/browser/resources/chromeos/chromevox/testing/assert_additions.js b/chrome/browser/resources/chromeos/chromevox/testing/assert_additions.js
index c51cbc7c6385e984fe92e0c227aa6ba5a26dfb2d..6838dfa38a064308f1a7b4300139bef000acbac7 100644
--- a/chrome/browser/resources/chromeos/chromevox/testing/assert_additions.js
+++ b/chrome/browser/resources/chromeos/chromevox/testing/assert_additions.js
@@ -80,5 +80,25 @@ function assertEqualsJSON(expected, actual, opt_message) {
   }
 }
 
+/**
+ * Asserts that two ArrayBuffers have the same content.
+ * @param {ArrayBuffer} arrayBufA The expected ArrayBuffer.
+ * @param {ArrayBuffer} arrayBufB The test ArrayBuffer.
+ */
+function assertArrayBuffersEquals(arrayBufA, arrayBufB) {
+  var view1 = new Uint8Array(arrayBufA);
+  var view2 = new Uint8Array(arrayBufB);
+  assertEquals(JSON.stringify(view1), JSON.stringify(view2));
+}
+
+/**
+ * Asserts that two Arrays have the same content.
+ * @param {ArrayBuffer} arrayA The expected array.
+ * @param {ArrayBuffer} arrayB The test array.
+ */
+function assertArraysEquals(arrayA, arrayB) {
+  assertEquals(JSON.stringify(arrayA), JSON.stringify(arrayB));
+}
+
 assertSame = assertEquals;
 assertNotSame = assertNotEquals;