Implement support for a Context parameter in image filters

include/effects/SkMatrixConvolutionImageFilter.h

 /*
  * Copyright 2012 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkMatrixConvolutionImageFilter_DEFINED
 #define SkMatrixConvolutionImageFilter_DEFINED
 
@@ skipping 53 matching lines @@
                                                            kernelOffset, tileMode, convolveAlpha,
                                                            input, cropRect));
     }
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkMatrixConvolutionImageFilter)
 
 protected:
     SkMatrixConvolutionImageFilter(SkReadBuffer& buffer);
     virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
 
-    virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&,
+    virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
                                SkBitmap* result, SkIPoint* loc) const SK_OVERRIDE;
 
 #if SK_SUPPORT_GPU
     virtual bool asNewEffect(GrEffectRef** effect,
                              GrTexture*,
-                             const SkMatrix& matrix,
+                             const SkMatrix& ctm,
                              const SkIRect& bounds) const SK_OVERRIDE;
 #endif
 
 #ifdef SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS
 public:
 #endif
     SkMatrixConvolutionImageFilter(const SkISize& kernelSize,
                                    const SkScalar* kernel,
                                    SkScalar gain,
                                    SkScalar bias,
@@ skipping 27 matching lines @@
                               SkBitmap* result,
                               const SkIRect& rect,
                               const SkIRect& bounds) const;
     void filterBorderPixels(const SkBitmap& src,
                             SkBitmap* result,
                             const SkIRect& rect,
                             const SkIRect& bounds) const;
 };
 
 #endif