Expose InlineTextBoxes in the accessibility tree.

Source/core/rendering/RenderText.cpp

Index: Source/core/rendering/RenderText.cpp
diff --git a/Source/core/rendering/RenderText.cpp b/Source/core/rendering/RenderText.cpp
index 2e75dc0d7431b43c0cebed810cca948b274082ec..42a0b385f86a84817a5114e6a89aea79c691971a 100644
--- a/Source/core/rendering/RenderText.cpp
+++ b/Source/core/rendering/RenderText.cpp
@@ -30,6 +30,7 @@
 #include "core/fetch/TextResourceDecoder.h"
 #include "core/frame/FrameView.h"
 #include "core/page/Settings.h"
+#include "core/rendering/AbstractInlineTextBox.h"
 #include "core/rendering/EllipsisBox.h"
 #include "core/rendering/InlineTextBox.h"
 #include "core/rendering/RenderBlock.h"
@@ -1829,4 +1830,9 @@ void RenderText::momentarilyRevealLastTypedCharacter(unsigned lastTypedCharacter
     secureTextTimer->restartWithNewText(lastTypedCharacterOffset);
 }
 
+PassRefPtr<AbstractInlineTextBox> RenderText::firstAbstractInlineTextBox()
+{
+    return AbstractInlineTextBox::getOrCreate(this, m_firstTextBox);
+}
+
 } // namespace WebCore