Revert "Revert "Revert "replace SkXfermode obj with SkBlendMode enum in paints"""

This reverts commit I86875511a13497112827cbaed1dbd7639e9e3d10.

legacy (100K) skp failure

Original change's description:
> Revert "Revert "replace SkXfermode obj with SkBlendMode enum in paints""
> 
> This reverts commit ce02e7175872abde3721df9e5d3ec0ab8384cd8e.
> 
> BUG=skia:
> 
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2878
> 
> Change-Id: I86875511a13497112827cbaed1dbd7639e9e3d10
> Reviewed-on: https://skia-review.googlesource.com/2878
> Reviewed-by: Matt Sarett <msarett@google.com>
> Commit-Queue: Mike Reed <reed@google.com>
> 

TBR=msarett@google.com,reed@google.com,reviews@skia.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Change-Id: Ife6f0cf3a22b3e8cf885a188f7f44e1ff62e06a5
Reviewed-on: https://skia-review.googlesource.com/2881
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>

1 files changed, 0 insertions, 61 deletions

diff --git a/src/core/SkXfermode.cpp b/src/core/SkXfermode.cpp
index 226f2b8b43..2717fab7e9 100644
--- a/src/core/SkXfermode.cpp
+++ b/src/core/SkXfermode.cpp
@@ -1553,64 +1553,3 @@ bool SkProcCoeffXfermode::onAppendStages(SkRasterPipeline* p) const {
     }
     return false;
 }
-
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-bool SkBlendMode_SupportsCoverageAsAlpha(SkBlendMode mode) {
-    switch (mode) {
-        case SkBlendMode::kDst:
-        case SkBlendMode::kSrcOver:
-        case SkBlendMode::kDstOver:
-        case SkBlendMode::kDstOut:
-        case SkBlendMode::kSrcATop:
-        case SkBlendMode::kXor:
-        case SkBlendMode::kPlus:
-            return true;
-        default:
-            break;
-    }
-    return false;
-}
-
-bool SkXfermode::IsOpaque(SkBlendMode mode, SrcColorOpacity opacityType) {
-    const ProcCoeff rec = gProcCoeffs[(int)mode];
-
-    switch (rec.fSC) {
-        case kDA_Coeff:
-        case kDC_Coeff:
-        case kIDA_Coeff:
-        case kIDC_Coeff:
-            return false;
-        default:
-            break;
-    }
-
-    switch (rec.fDC) {
-        case kZero_Coeff:
-            return true;
-        case kISA_Coeff:
-            return kOpaque_SrcColorOpacity == opacityType;
-        case kSA_Coeff:
-            return kTransparentBlack_SrcColorOpacity == opacityType ||
-            kTransparentAlpha_SrcColorOpacity == opacityType;
-        case kSC_Coeff:
-            return kTransparentBlack_SrcColorOpacity == opacityType;
-        default:
-            return false;
-    }
-    return false;
-}
-
-#if SK_SUPPORT_GPU
-sk_sp<GrXPFactory> SkBlendMode_AsXPFactory(SkBlendMode mode) {
-    const ProcCoeff rec = gProcCoeffs[(int)mode];
-    if (CANNOT_USE_COEFF != rec.fSC) {
-        sk_sp<GrXPFactory> result(GrPorterDuffXPFactory::Make(mode));
-        SkASSERT(result);
-        return result;
-    }
-
-    SkASSERT(GrCustomXfermode::IsSupportedMode((SkXfermode::Mode)mode));
-    return GrCustomXfermode::MakeXPFactory((SkXfermode::Mode)mode);
-}
-#endif