Nuke SkSingleInputImageFilter.  99% of its functionality was refactored into SkImageFilterUtils in https://code.google.com/p/skia/source/detail?r=7467, so it has outlived its usefulness.

Review URL: https://codereview.appspot.com/7277055

git-svn-id: http://skia.googlecode.com/svn/trunk@7563 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/include/effects/SkOffsetImageFilter.h b/include/effects/SkOffsetImageFilter.h
index 74d6ebc..62b5fa6 100644
--- a/include/effects/SkOffsetImageFilter.h
+++ b/include/effects/SkOffsetImageFilter.h
@@ -8,10 +8,10 @@
 #ifndef SkOffsetImageFilter_DEFINED
 #define SkOffsetImageFilter_DEFINED
 
-#include "SkSingleInputImageFilter.h"
+#include "SkImageFilter.h"
 #include "SkPoint.h"
 
-class SK_API SkOffsetImageFilter : public SkSingleInputImageFilter {
+class SK_API SkOffsetImageFilter : public SkImageFilter {
 public:
     SkOffsetImageFilter(SkScalar dx, SkScalar dy, SkImageFilter* input = NULL);
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkOffsetImageFilter)
@@ -27,7 +27,7 @@
 private:
     SkVector fOffset;
 
-    typedef SkSingleInputImageFilter INHERITED;
+    typedef SkImageFilter INHERITED;
 };
 
 #endif