Expose InlineTextBoxes in the accessibility tree.

Source/core/rendering/RenderText.h

Index: Source/core/rendering/RenderText.h
diff --git a/Source/core/rendering/RenderText.h b/Source/core/rendering/RenderText.h
index 4313475f38f1f115d22fcc6f224f1a8e8111e55b..cd2732e3303f9a7de79550a9fcd7f49148ee0ee8 100644
--- a/Source/core/rendering/RenderText.h
+++ b/Source/core/rendering/RenderText.h
@@ -25,9 +25,11 @@
 
 #include "core/rendering/RenderObject.h"
 #include "wtf/Forward.h"
+#include "wtf/PassRefPtr.h"
 
 namespace WebCore {
 
+class AbstractInlineTextBox;
 class InlineTextBox;
 
 class RenderText : public RenderObject {
@@ -142,6 +144,8 @@ public:
 
     void removeAndDestroyTextBoxes();
 
+    PassRefPtr<AbstractInlineTextBox> firstAbstractInlineTextBox();
+
 protected:
     virtual void computePreferredLogicalWidths(float leadWidth);
     virtual void willBeDestroyed();