Implement crop rect for lighting image filters.

src/effects/SkMatrixConvolutionImageFilter.cpp

Index: src/effects/SkMatrixConvolutionImageFilter.cpp
diff --git a/src/effects/SkMatrixConvolutionImageFilter.cpp b/src/effects/SkMatrixConvolutionImageFilter.cpp
index 99e8368e7dac2b77d946701e74d0d10f87057b43..b3ce7ecc94e5faa58579439b50381ea8586d5422 100644
--- a/src/effects/SkMatrixConvolutionImageFilter.cpp
+++ b/src/effects/SkMatrixConvolutionImageFilter.cpp
@@ -565,7 +565,8 @@ GrEffectRef* GrMatrixConvolutionEffect::TestCreate(SkMWCRandom* random,
 }
 
 bool SkMatrixConvolutionImageFilter::asNewEffect(GrEffectRef** effect,
-                                                 GrTexture* texture) const {
+                                                 GrTexture* texture,
+                                                 const SkIPoint&) const {
     if (!effect) {
         return fKernelSize.width() * fKernelSize.height() <= MAX_KERNEL_SIZE;
     }