am b08013c3: Added overlay support for drawing/responding to text anchors.

Merge commit 'b08013c312e3d849029a2f4c11889274c00f438d' into gingerbread-plus-aosp

* commit 'b08013c312e3d849029a2f4c11889274c00f438d':
  Added overlay support for drawing/responding to text anchors.