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/SkMatrixConvolutionImageFilter.h b/include/effects/SkMatrixConvolutionImageFilter.h
index 09cb5ef..cd2a16f 100644
--- a/include/effects/SkMatrixConvolutionImageFilter.h
+++ b/include/effects/SkMatrixConvolutionImageFilter.h
@@ -8,7 +8,7 @@
 #ifndef SkMatrixConvolutionImageFilter_DEFINED
 #define SkMatrixConvolutionImageFilter_DEFINED
 
-#include "SkSingleInputImageFilter.h"
+#include "SkImageFilter.h"
 #include "SkScalar.h"
 #include "SkSize.h"
 #include "SkPoint.h"
@@ -19,7 +19,7 @@
     effects such as sharpening, blurring, edge detection, etc.
  */
 
-class SK_API SkMatrixConvolutionImageFilter : public SkSingleInputImageFilter {
+class SK_API SkMatrixConvolutionImageFilter : public SkImageFilter {
 public:
     /*! \enum TileMode */
     enum TileMode {
@@ -73,7 +73,7 @@
     SkIPoint  fTarget;
     TileMode  fTileMode;
     bool      fConvolveAlpha;
-    typedef SkSingleInputImageFilter INHERITED;
+    typedef SkImageFilter INHERITED;
 
     template <class PixelFetcher, bool convolveAlpha>
     void filterPixels(const SkBitmap& src, SkBitmap* result, const SkIRect& rect);