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/GrAALinearizingConvexPathRenderer.cpp b/src/gpu/ops/GrAALinearizingConvexPathRenderer.cpp
index 1765a5a..4cc72ac 100644
--- a/src/gpu/ops/GrAALinearizingConvexPathRenderer.cpp
+++ b/src/gpu/ops/GrAALinearizingConvexPathRenderer.cpp
@@ -228,7 +228,7 @@
     void onPrepareDraws(Target* target) override {
         // Setup GrGeometryProcessor
         sk_sp<GrGeometryProcessor> gp(create_lines_only_gp(target->caps().shaderCaps(),
-                                                           fHelper.compatibleWithAlphaAsCoverage(),
+                                                           fHelper.compatibleWithCoverageAsAlpha(),
                                                            this->viewMatrix(),
                                                            fHelper.usesLocalCoords(),
                                                            fWideColor));