Expose InlineTextBoxes in the accessibility tree.

Source/web/WebAccessibilityObject.cpp

Index: Source/web/WebAccessibilityObject.cpp
diff --git a/Source/web/WebAccessibilityObject.cpp b/Source/web/WebAccessibilityObject.cpp
index de046001b09f65403ff386efce7bf75f450eda2a..b4d382b1673e77e4b169d334237f44789bbb80b1 100644
--- a/Source/web/WebAccessibilityObject.cpp
+++ b/Source/web/WebAccessibilityObject.cpp
@@ -84,6 +84,12 @@ bool WebAccessibilityObject::accessibilityEnabled()
     return AXObjectCache::accessibilityEnabled();
 }
 
+// static
+void WebAccessibilityObject::enableInlineTextBoxAccessibility()
+{
+    AXObjectCache::setInlineTextBoxAccessibility(true);
+}
+
 void WebAccessibilityObject::startCachingComputedObjectAttributesUntilTreeMutates()
 {
     m_private->axObjectCache()->startCachingComputedObjectAttributesUntilTreeMutates();
@@ -1001,6 +1007,42 @@ unsigned WebAccessibilityObject::cellRowSpan() const
     return rowRange.second;
 }
 
+void WebAccessibilityObject::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 WebAccessibilityObject::wordBoundaries(WebVector<int>& starts, WebVector<int>& ends) const
+{
+    if (isDetached())
+        return;
+
+    Vector<int> startsVector;
+    Vector<int> endsVector;
+    m_private->wordBoundaries(startsVector, endsVector);
+
+    size_t vectorSize = startsVector.size();
+    ASSERT(endsVector.size() == vectorSize);
+    WebVector<int> startsWebVector(vectorSize);
+    WebVector<int> endsWebVector(vectorSize);
+    for (size_t i = 0; i < vectorSize; i++) {
+        startsWebVector[i] = startsVector[i];
+        endsWebVector[i] = endsVector[i];
+    }
+    starts.swap(startsWebVector);
+    ends.swap(endsWebVector);
+}
+
 void WebAccessibilityObject::scrollToMakeVisible() const
 {
     if (!isDetached())