Remove uniqueID from all filter serialization.

gm/dropshadowimagefilter.cpp

Index: gm/dropshadowimagefilter.cpp
diff --git a/gm/dropshadowimagefilter.cpp b/gm/dropshadowimagefilter.cpp
index f60f22c70f6bdd91e24834ed71d79f378fbe28b9..e06264c9da8afdef15e604c78ef913a91f54a69e 100644
--- a/gm/dropshadowimagefilter.cpp
+++ b/gm/dropshadowimagefilter.cpp
@@ -133,11 +133,11 @@ protected:
             SkDropShadowImageFilter::Create(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE,
                 SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode),
             SkDropShadowImageFilter::Create(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE,
-                SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, cfif, NULL, 0),
+                SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, cfif, NULL),
             SkDropShadowImageFilter::Create(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE,
-                SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, NULL, &cropRect, 0),
+                SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, NULL, &cropRect),
             SkDropShadowImageFilter::Create(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE,
-                SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, NULL, &bogusRect, 0),
+                SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, NULL, &bogusRect),
             SkDropShadowImageFilter::Create(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE,
                 SkDropShadowImageFilter::kDrawShadowOnly_ShadowMode),
         };