Support Windows/Linux-style forward delete feedback

chrome/browser/resources/chromeos/chromevox/common/editable_text_test.unitjs

Index: chrome/browser/resources/chromeos/chromevox/common/editable_text_test.unitjs
diff --git a/chrome/browser/resources/chromeos/chromevox/common/editable_text_test.unitjs b/chrome/browser/resources/chromeos/chromevox/common/editable_text_test.unitjs
index a122d096cb88b772ca45e7b865eacd01e81c8ba3..7da03495e26ff42bce9939ef9c5ca2b926169bfd 100644
--- a/chrome/browser/resources/chromeos/chromevox/common/editable_text_test.unitjs
+++ b/chrome/browser/resources/chromeos/chromevox/common/editable_text_test.unitjs
@@ -220,6 +220,7 @@ TEST_F('CvoxEditableTextUnitTest', 'TypingWords', function() {
   assertEqualStringArrays(['.', 'd', 'l'], tts.get());
 
   // Forward-delete
+  cvox.ChromeVoxEditableTextBase.useIBeamCursor = true;
   obj.changed(new cvox.TextChangeEvent('Hello, Wor', 9, 9));
   obj.changed(new cvox.TextChangeEvent('Hello, Wor', 8, 8));
   obj.changed(new cvox.TextChangeEvent('Hello, Wor', 7, 7));
@@ -228,6 +229,16 @@ TEST_F('CvoxEditableTextUnitTest', 'TypingWords', function() {
   obj.changed(new cvox.TextChangeEvent('Hello, ', 7, 7));
   assertEqualStringArrays(['r', 'o', 'W', 'W', 'o', 'r'], tts.get());
 
+  obj.changed(new cvox.TextChangeEvent('Hello, Wor', 10, 10));
+  cvox.ChromeVoxEditableTextBase.useIBeamCursor = false;
+  obj.changed(new cvox.TextChangeEvent('Hello, Wor', 9, 9));
+  obj.changed(new cvox.TextChangeEvent('Hello, Wor', 8, 8));
+  obj.changed(new cvox.TextChangeEvent('Hello, Wor', 7, 7));
+  obj.changed(new cvox.TextChangeEvent('Hello, or', 7, 7));
+  obj.changed(new cvox.TextChangeEvent('Hello, r', 7, 7));
+  obj.changed(new cvox.TextChangeEvent('Hello, ', 7, 7));
+  assertEqualStringArrays(['Wor', 'r', 'o', 'W', 'o', 'r'], tts.get());
+
   // Clear all
   obj.changed(new cvox.TextChangeEvent('', 0, 0));
   assertEqualStringArrays(['Hello, , deleted'], tts.get());