turn assert into not_implemented_yet for patheffects on text

git-svn-id: http://skia.googlecode.com/svn/trunk@14854 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/pdf/SkPDFDevice.cpp b/src/pdf/SkPDFDevice.cpp
index 52fc2d2..e5402a0 100644
--- a/src/pdf/SkPDFDevice.cpp
+++ b/src/pdf/SkPDFDevice.cpp
@@ -2028,8 +2028,7 @@
         const SkPaint& paint,
         bool hasText,
         GraphicStateEntry* entry) {
-    SkASSERT(paint.getPathEffect() == NULL);
-
+    NOT_IMPLEMENTED(paint.getPathEffect() != NULL, false);
     NOT_IMPLEMENTED(paint.getMaskFilter() != NULL, false);
     NOT_IMPLEMENTED(paint.getColorFilter() != NULL, false);