Rebaseline shadertext2 after SkPaint::measureText changes

Rebaseline shadertext2 after SkPaint::measureText changes

Rebaseline shadertext2 after commit "Fix SkPaint::measureText for stroked
hairline text".

Unignore ignored shadertext2 for Test-Ubuntu13.10-ShuttleA-NoGPU-x86_64-Debug
pdf-poppler.

The label "Filled" in the test moves to the left due to the changes in the
measurement. The SkPaint::measureText will use the "use paths" code path,
similar to the drawing code. This results in different length for the string
"Filled".

As a side-note, the test probably measures either wrong text or uses wrong
paint. This can be fixed separately.

NOTREECHECKS=true
NOTRY=true
R=jvanverth@google.com, mtklein@google.com, rmistry@google.com

Author: kkinnunen@nvidia.com

Review URL: https://codereview.chromium.org/347393002