Expose InlineTextBoxes in the accessibility tree.

Source/web/WebAXObject.cpp

Index: Source/web/WebAXObject.cpp
diff --git a/Source/web/WebAXObject.cpp b/Source/web/WebAXObject.cpp
index 3a82c5f8b52c984eaefe3306cbb02b2a12bdb3f5..9f3294c97e616e70350e59e399e2e656ca56bf8c 100644
--- a/Source/web/WebAXObject.cpp
+++ b/Source/web/WebAXObject.cpp
@@ -84,6 +84,12 @@ bool WebAXObject::accessibilityEnabled()
     return AXObjectCache::accessibilityEnabled();
 }
 
+// static
+void WebAXObject::enableInlineTextBoxAccessibility()
+{
+    AXObjectCache::setInlineTextBoxAccessibility(true);
+}
+
 void WebAXObject::startCachingComputedObjectAttributesUntilTreeMutates()
 {
     m_private->axObjectCache()->startCachingComputedObjectAttributesUntilTreeMutates();
@@ -992,6 +998,47 @@ unsigned WebAXObject::cellRowSpan() const
     return rowRange.second;
 }
 
+WebAXTextDirection WebAXObject::textDirection() const
+{
+    if (isDetached())
+        return WebAXTextDirectionLR;
+
+    return static_cast<WebAXTextDirection>(m_private->textDirection());
+}
+
+void WebAXObject::characterOffsets(WebVector<int>& offsets) const
+{
+    if (isDetached())
+        return;
+
+    Vector<int> offsetsVector;
+    m_private->textCharacterOffsets(offsetsVector);
+
+    size_t vectorSize = offsetsVector.size();
+    WebVector<int> offsetsWebVector(vectorSize);
+    for (size_t i = 0; i < vectorSize; i++)
+        offsetsWebVector[i] = offsetsVector[i];
+    offsets.swap(offsetsWebVector);
+}
+
+void WebAXObject::wordBoundaries(WebVector<int>& starts, WebVector<int>& ends) const
+{
+    if (isDetached())
+        return;
+
+    Vector<PlainTextRange> words;
+    m_private->wordBoundaries(words);
+
+    WebVector<int> startsWebVector(words.size());
+    WebVector<int> endsWebVector(words.size());
+    for (size_t i = 0; i < words.size(); i++) {
+        startsWebVector[i] = words[i].start;
+        endsWebVector[i] = words[i].start + words[i].length;
+    }
+    starts.swap(startsWebVector);
+    ends.swap(endsWebVector);
+}
+
 void WebAXObject::scrollToMakeVisible() const
 {
     if (!isDetached())