Clean up SkImageFilter constructors.

gm/imagefiltersbase.cpp

Index: gm/imagefiltersbase.cpp
diff --git a/gm/imagefiltersbase.cpp b/gm/imagefiltersbase.cpp
index 4779c81438ee226cb5f19d57ba32377907340b9b..84c912e7b7efdc3042a07495a8e68bad824f3c4f 100644
--- a/gm/imagefiltersbase.cpp
+++ b/gm/imagefiltersbase.cpp
@@ -24,7 +24,7 @@ public:
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(FailImageFilter)
 protected:
-    FailImageFilter() : INHERITED(0) {}
+    FailImageFilter() : INHERITED(0, NULL) {}
     virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
                                SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE {
         return false;
@@ -44,13 +44,13 @@ static SkFlattenable::Registrar gFailImageFilterReg("FailImageFilter",
 
 class IdentityImageFilter : public SkImageFilter {
 public:
-    static IdentityImageFilter* Create() {
-        return SkNEW(IdentityImageFilter);
+    static IdentityImageFilter* Create(SkImageFilter* input = NULL) {
+        return SkNEW_ARGS(IdentityImageFilter, (input));
     }
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(IdentityImageFilter)
 protected:
-    IdentityImageFilter() : INHERITED(0) {}
+    IdentityImageFilter(SkImageFilter* input) : INHERITED(1, &input) {}
     virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
                                SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE {
         *result = src;