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/glsl/GrGLSLBlend.cpp b/src/gpu/glsl/GrGLSLBlend.cpp
index 5afb984..34df0df 100644
--- a/src/gpu/glsl/GrGLSLBlend.cpp
+++ b/src/gpu/glsl/GrGLSLBlend.cpp
@@ -380,7 +380,7 @@
             break;
         }
         default:
-            SkFAIL("Unknown Custom Xfer mode.");
+            SK_ABORT("Unknown Custom Xfer mode.");
             break;
     }
 }
@@ -427,7 +427,7 @@
                 fsBuilder->codeAppendf(" * (1.0 - %s.a)", dstColorName);
                 break;
             default:
-                SkFAIL("Unsupported Blend Coeff");
+                SK_ABORT("Unsupported Blend Coeff");
         }
         return true;
     }
@@ -494,7 +494,7 @@
             dstCoeff = SkBlendModeCoeff::kZero;
             break;
         default:
-            SkFAIL("Unsupported Op");
+            SK_ABORT("Unsupported Op");
             // We should never get here but to make compiler happy
             srcCoeff = SkBlendModeCoeff::kZero;
             dstCoeff = SkBlendModeCoeff::kZero;