Convert GrCrash->SkFAIL GrDebugCrash->SkDEBUGFAIL

R=robertphillips@google.com, reed@google.com, mtklein@google.com

Author: bsalomon@google.com

Review URL: https://codereview.chromium.org/257393004

git-svn-id: http://skia.googlecode.com/svn/trunk@14460 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrClipMaskManager.cpp b/src/gpu/GrClipMaskManager.cpp
index 12b3360..071b9d3 100644
--- a/src/gpu/GrClipMaskManager.cpp
+++ b/src/gpu/GrClipMaskManager.cpp
@@ -1000,7 +1000,7 @@
                         funcRef = clipBit;
                         break;
                     default:
-                        GrCrash("Unknown stencil func");
+                        SkFAIL("Unknown stencil func");
                 }
             } else {
                 funcMask &= userBits;