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/GrSimpleMeshDrawOpHelper.cpp b/src/gpu/ops/GrSimpleMeshDrawOpHelper.cpp
index 73fa3ab..9b2b6f2 100644
--- a/src/gpu/ops/GrSimpleMeshDrawOpHelper.cpp
+++ b/src/gpu/ops/GrSimpleMeshDrawOpHelper.cpp
@@ -17,7 +17,7 @@
         , fPipelineFlags(0)
         , fAAType((int)aaType)
         , fUsesLocalCoords(false)
-        , fCompatibleWithAlphaAsCoveage(false) {
+        , fCompatibleWithCoverageAsAlpha(false) {
     SkDEBUGCODE(fDidAnalysis = false);
     SkDEBUGCODE(fMadePipeline = false);
     if (GrAATypeIsHW(aaType)) {
@@ -57,7 +57,7 @@
     }
     bool result = fPipelineFlags == that.fPipelineFlags && (fAAType == that.fAAType ||
             (noneAsCoverageAA && none_as_coverage_aa_compatible(this->aaType(), that.aaType())));
-    SkASSERT(!result || fCompatibleWithAlphaAsCoveage == that.fCompatibleWithAlphaAsCoveage);
+    SkASSERT(!result || fCompatibleWithCoverageAsAlpha == that.fCompatibleWithCoverageAsAlpha);
     SkASSERT(!result || fUsesLocalCoords == that.fUsesLocalCoords);
     return result;
 }
@@ -95,7 +95,7 @@
         analysis = GrProcessorSet::EmptySetAnalysis();
     }
     fUsesLocalCoords = analysis.usesLocalCoords();
-    fCompatibleWithAlphaAsCoveage = analysis.isCompatibleWithCoverageAsAlpha();
+    fCompatibleWithCoverageAsAlpha = analysis.isCompatibleWithCoverageAsAlpha();
     return analysis;
 }