Add SkDEBUGFAIL to clean up use of SkASSERT(!"text");
catch a couple of latent SkASSERT("text") bugs.

http://codereview.appspot.com/5504090/



git-svn-id: http://skia.googlecode.com/svn/trunk@2926 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/core/SkPictureRecord.cpp b/src/core/SkPictureRecord.cpp
index 7997b74..8813ee6 100644
--- a/src/core/SkPictureRecord.cpp
+++ b/src/core/SkPictureRecord.cpp
@@ -139,7 +139,7 @@
         case SkRegion::kDifference_Op:
             return false;
         default:
-            SkASSERT(!"unknown region op");
+            SkDEBUGFAIL("unknown region op");
             return false;
     }
 }