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/gl/GrGLPathRendering.cpp b/src/gpu/gl/GrGLPathRendering.cpp
index 0b3baca..d907e86 100644
--- a/src/gpu/gl/GrGLPathRendering.cpp
+++ b/src/gpu/gl/GrGLPathRendering.cpp
@@ -68,7 +68,7 @@
 static GrGLenum gr_stencil_op_to_gl_path_rendering_fill_mode(GrStencilOp op) {
     switch (op) {
         default:
-            SkFAIL("Unexpected path fill.");
+            SK_ABORT("Unexpected path fill.");
             /* fallthrough */;
         case GrStencilOp::kIncWrap:
             return GR_GL_COUNT_UP;