add GM to test imagefilters + xfermodes

add GM to test imagefilters + xfermodes

draws incorrectly as is, but will be fixed by https://codereview.chromium.org/1091173003

BUG=skia:3741
Committed: https://skia.googlesource.com/skia/+/7e4186accea094276c9f3c65c64e63ffc59aa644

[reed1, 2015-04-20 14:01:51]

reed@google.com changed reviewers:
+ robertphillips@google.com, senorblanco@google.com

[reed1, 2015-04-20 14:02:00]

The CQ bit was checked by reed@google.com to run a CQ dry run

[commit-bot: I haz the power, 2015-04-20 14:02:10]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1088773004/1

[robertphillips, 2015-04-20 14:13:34]

lgtm + 2 suggestions

https://codereview.chromium.org/1088773004/diff/20001/gm/imagefilters.cpp
File gm/imagefilters.cpp (right):

https://codereview.chromium.org/1088773004/diff/20001/gm/imagefilters.cpp#new...
gm/imagefilters.cpp:16: */
Maybe add a link to the Skia issue?

https://codereview.chromium.org/1088773004/diff/20001/gm/imagefilters.cpp#new...
gm/imagefilters.cpp:25: SkString onShortName() override {
rm "_test" ?

[reed1, 2015-04-20 14:20:45]

https://codereview.chromium.org/1088773004/diff/20001/gm/imagefilters.cpp
File gm/imagefilters.cpp (right):

https://codereview.chromium.org/1088773004/diff/20001/gm/imagefilters.cpp#new...
gm/imagefilters.cpp:16: */
On 2015/04/20 14:13:34, robertphillips wrote:
> Maybe add a link to the Skia issue?

Done.

https://codereview.chromium.org/1088773004/diff/20001/gm/imagefilters.cpp#new...
gm/imagefilters.cpp:25: SkString onShortName() override {
On 2015/04/20 14:13:34, robertphillips wrote:
> rm "_test" ?

Done.

[reed1, 2015-04-20 14:20:52]

The CQ bit was checked by reed@google.com

[reed1, 2015-04-20 14:20:52]

The patchset sent to the CQ was uploaded after l-g-t-m from
robertphillips@google.com
Link to the patchset: https://codereview.chromium.org/1088773004/#ps40001
(title: "reference bug in code")

[commit-bot: I haz the power, 2015-04-20 14:21:01]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1088773004/40001

[commit-bot: I haz the power, 2015-04-20 14:27:18]

Committed patchset #3 (id:40001) as
https://skia.googlesource.com/skia/+/7e4186accea094276c9f3c65c64e63ffc59aa644