GM: replace boilerplate with macros

I have verified locally that nothing draws differently.

Motivation:
*   SK_SIMPLE_GM makes it easier to write a GM.
*   Reducing 1100 lines of code makes maintenance easier.
*   Simple GMs are easy to convert to Fiddles.

Review URL: https://codereview.chromium.org/1333553002

1 files changed, 1 insertions, 1 deletions

diff --git a/gm/convexpolyeffect.cpp b/gm/convexpolyeffect.cpp
index b6a05cc6be..c014e6a7f5 100644
--- a/gm/convexpolyeffect.cpp
+++ b/gm/convexpolyeffect.cpp
@@ -152,7 +152,7 @@ protected:
         using namespace GrDefaultGeoProcFactory;
         GrRenderTarget* rt = canvas->internal_private_accessTopLayerRenderTarget();
         if (nullptr == rt) {
-            this->drawGpuOnlyMessage(canvas);
+            skiagm::GM::DrawGpuOnlyMessage(canvas);
             return;
         }
         GrContext* context = rt->getContext();