Make non-AA hairline stroke rects snap to pixels centers so they close.

tests/GLProgramsTest.cpp

Index: tests/GLProgramsTest.cpp
diff --git a/tests/GLProgramsTest.cpp b/tests/GLProgramsTest.cpp
index ed74ae8f6a65ae828a3c0727580ae1622d6b03db..41c66798daf06139c2d2aea6c3eae7d15915f2a7 100644
--- a/tests/GLProgramsTest.cpp
+++ b/tests/GLProgramsTest.cpp
@@ -186,7 +186,7 @@ static void set_random_color_coverage_stages(GrGLGpu* gpu,
 
 static void set_random_state(GrPipelineBuilder* pipelineBuilder, SkRandom* random) {
     int state = 0;
-    for (int i = 1; i <= GrPipelineBuilder::kLast_StateBit; i <<= 1) {
+    for (int i = 1; i <= GrPipelineBuilder::kLast_Flag; i <<= 1) {
         state |= random->nextBool() * i;
     }
     pipelineBuilder->enableState(state);