Standardize naming on CoverageAsAlpha (rather than AlphaAsCoverage)

Also fix a spelling mistake: Coveage -> Coverage

Bug: skia:
Change-Id: I296415ca194b0805470596d297e1d815f43b404a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/201394
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/ops/GrStrokeRectOp.cpp b/src/gpu/ops/GrStrokeRectOp.cpp
index 5825be5..5619c41 100644
--- a/src/gpu/ops/GrStrokeRectOp.cpp
+++ b/src/gpu/ops/GrStrokeRectOp.cpp
@@ -466,7 +466,7 @@
 
 void AAStrokeRectOp::onPrepareDraws(Target* target) {
     sk_sp<GrGeometryProcessor> gp(create_aa_stroke_rect_gp(target->caps().shaderCaps(),
-                                                           fHelper.compatibleWithAlphaAsCoverage(),
+                                                           fHelper.compatibleWithCoverageAsAlpha(),
                                                            this->viewMatrix(),
                                                            fHelper.usesLocalCoords(),
                                                            fWideColor));
@@ -506,7 +506,7 @@
                                            info.fDevInside,
                                            fMiterStroke,
                                            info.fDegenerate,
-                                           fHelper.compatibleWithAlphaAsCoverage());
+                                           fHelper.compatibleWithCoverageAsAlpha());
     }
     helper.recordDraw(target, std::move(gp));
 }