Remove drawText support from SkOverdrawCanvas

This canvas is used by android, and never uses the drawText
method. I think this is the last call to processText which
will be deleted shortly.

Change-Id: I134abff47b0b7fda02297e4b4496e2f0413a3957
Reviewed-on: https://skia-review.googlesource.com/141546
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Herb Derby <herb@google.com>
1 file changed