Use constexpr constructors of GrStencilSettings rather than hacky macro system

src/gpu/GrDrawTarget.cpp

Index: src/gpu/GrDrawTarget.cpp
diff --git a/src/gpu/GrDrawTarget.cpp b/src/gpu/GrDrawTarget.cpp
index 49c46feeaf62e390b91ccb21d9a3f6e8e0dce243..0f180dc861b92ced07c2ddc9548564894f7642b0 100644
--- a/src/gpu/GrDrawTarget.cpp
+++ b/src/gpu/GrDrawTarget.cpp
@@ -269,36 +269,31 @@ void GrDrawTarget::drawBatch(const GrPipelineBuilder& pipelineBuilder,
     this->recordBatch(batch);
 }
 
-static const GrStencilSettings& winding_path_stencil_settings() {
-    GR_STATIC_CONST_SAME_STENCIL_STRUCT(gSettings,
+void GrDrawTarget::getPathStencilSettingsForFilltype(GrPathRendering::FillType fill,
+                                                     const GrStencilAttachment* sb,
+                                                     GrStencilSettings* outStencilSettings) {
+    static constexpr GrStencilSettings kWindingStencilSettings(
         kIncClamp_StencilOp,
         kIncClamp_StencilOp,
         kAlwaysIfInClip_StencilFunc,
-        0xFFFF, 0xFFFF, 0xFFFF);
-    return *GR_CONST_STENCIL_SETTINGS_PTR_FROM_STRUCT_PTR(&gSettings);
-}
+        0xFFFF, 0xFFFF, 0xFFFF
+    );
 
-static const GrStencilSettings& even_odd_path_stencil_settings() {
-    GR_STATIC_CONST_SAME_STENCIL_STRUCT(gSettings,
+    static constexpr GrStencilSettings kEvenODdStencilSettings(
         kInvert_StencilOp,
         kInvert_StencilOp,
         kAlwaysIfInClip_StencilFunc,
-        0xFFFF, 0xFFFF, 0xFFFF);
-    return *GR_CONST_STENCIL_SETTINGS_PTR_FROM_STRUCT_PTR(&gSettings);
-}
-
-void GrDrawTarget::getPathStencilSettingsForFilltype(GrPathRendering::FillType fill,
-                                                     const GrStencilAttachment* sb,
-                                                     GrStencilSettings* outStencilSettings) {
+        0xFFFF, 0xFFFF, 0xFFFF
+    );
 
     switch (fill) {
         default:
             SkFAIL("Unexpected path fill.");
         case GrPathRendering::kWinding_FillType:
-            *outStencilSettings = winding_path_stencil_settings();
+            *outStencilSettings = kWindingStencilSettings;
             break;
         case GrPathRendering::kEvenOdd_FillType:
-            *outStencilSettings = even_odd_path_stencil_settings();
+            *outStencilSettings = kEvenODdStencilSettings;
             break;
     }
     fClipMaskManager->adjustPathStencilParams(sb, outStencilSettings);