SkValue: SkXfermode

src/utils/debugger/SkDebugCanvas.cpp

Index: src/utils/debugger/SkDebugCanvas.cpp
diff --git a/src/utils/debugger/SkDebugCanvas.cpp b/src/utils/debugger/SkDebugCanvas.cpp
index 63739aee814a41a1a4b338d6009590f20eec56d8..80968a9fd84ae10bf78771f5178c695511a2fe2d 100644
--- a/src/utils/debugger/SkDebugCanvas.cpp
+++ b/src/utils/debugger/SkDebugCanvas.cpp
@@ -12,6 +12,7 @@
 #include "SkDevice.h"
 #include "SkPaintFilterCanvas.h"
 #include "SkXfermode.h"
+#include "SkValue.h"
 
 namespace {
 
@@ -54,6 +55,8 @@ public:
 #ifndef SK_IGNORE_TO_STRING
     void toString(SkString* str) const override { str->set("OverdrawXfermode"); }
 #endif
+    // We don't serialize this xfermode.
+    SkValue asValue() const override { return SkValue(); }

[mtklein, 2016/01/15 17:26:20]

Let's make this the default impl on SkXfermode, at least for now?  That makes
working with values opt-in rather than opt-out as we've got now.

[hal.canary, 2016/01/15 19:44:31]

done.  I'll do this with all of the SkFooPaintEffect classes.

 };
 
 class DebugPaintFilterCanvas : public SkPaintFilterCanvas {