Replace SkFAIL with SK_ABORT.

SkFAIL is a legacy macro which is just SK_ABORT. This CL mechanically
changes uses of SkFAIL to SK_ABORT in preparation for its removal. The
related sk_throw macro will be changed independently, due to needing to
actually clean up its users.

Change-Id: Id70b5c111a02d2458dc60c8933f444df27d9cebb
Reviewed-on: https://skia-review.googlesource.com/35284
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
diff --git a/src/gpu/effects/GrXfermodeFragmentProcessor.cpp b/src/gpu/effects/GrXfermodeFragmentProcessor.cpp
index f2c026f..3b9b44c 100644
--- a/src/gpu/effects/GrXfermodeFragmentProcessor.cpp
+++ b/src/gpu/effects/GrXfermodeFragmentProcessor.cpp
@@ -73,7 +73,7 @@
             case SkBlendMode::kClear:
             case SkBlendMode::kSrc:
             case SkBlendMode::kDst:
-                SkFAIL("Should never create clear, src, or dst compose two FP.");
+                SK_ABORT("Should never create clear, src, or dst compose two FP.");
                 flags = kNone_OptimizationFlags;
                 break;
 
@@ -303,7 +303,7 @@
         OptimizationFlags flags;
         switch (mode) {
             case SkBlendMode::kClear:
-                SkFAIL("Should never create clear compose one FP.");
+                SK_ABORT("Should never create clear compose one FP.");
                 flags = kNone_OptimizationFlags;
                 break;