am c621b65d: Merge "bug #2542580: add the appropriate mdpi asset for chat icon." into froyo

Merge commit 'c621b65d2f4ac88174fb98d2ed9a6b0d06fde4da' into froyo-plus-aosp

* commit 'c621b65d2f4ac88174fb98d2ed9a6b0d06fde4da':
  bug #2542580: add the appropriate mdpi asset for chat icon.