Fix underlying issue causing crbug.com/348821.

src/effects/SkDashPathEffect.cpp

Index: src/effects/SkDashPathEffect.cpp
diff --git a/src/effects/SkDashPathEffect.cpp b/src/effects/SkDashPathEffect.cpp
index 8be5f1d086734deafa587d9ba76207e4b8f0165d..58706c5b78f52d55bbead6d4f7a8f3634bd838c6 100644
--- a/src/effects/SkDashPathEffect.cpp
+++ b/src/effects/SkDashPathEffect.cpp
@@ -530,12 +530,10 @@ bool SkDashPathEffect::asPoints(PointData* results,
 }
 
 SkFlattenable::Factory SkDashPathEffect::getFactory() const {
-    return fInitialDashLength < 0 ? NULL : CreateProc;
+    return CreateProc;
 }
 
 void SkDashPathEffect::flatten(SkWriteBuffer& buffer) const {
-    SkASSERT(fInitialDashLength >= 0);
-
     this->INHERITED::flatten(buffer);
     buffer.writeInt(fInitialDashIndex);
     buffer.writeScalar(fInitialDashLength);