Fix Morphology effects sourcing outside of the crop rect.

src/gpu/effects/GrMatrixConvolutionEffect.cpp

Index: src/gpu/effects/GrMatrixConvolutionEffect.cpp
diff --git a/src/gpu/effects/GrMatrixConvolutionEffect.cpp b/src/gpu/effects/GrMatrixConvolutionEffect.cpp
index 698b7050ef0a134c54775c7f0aef851817a5d79a..4c8287ebbfef76e3bd479ac3d9b667f048b0797c 100644
--- a/src/gpu/effects/GrMatrixConvolutionEffect.cpp
+++ b/src/gpu/effects/GrMatrixConvolutionEffect.cpp
@@ -31,7 +31,6 @@ private:
     SkISize                     fKernelSize;
     bool                        fConvolveAlpha;
 
-    UniformHandle               fBoundsUni;
     UniformHandle               fKernelUni;
     UniformHandle               fImageIncrementUni;
     UniformHandle               fKernelOffsetUni;
@@ -57,9 +56,6 @@ void GrGLMatrixConvolutionEffect::emitCode(GrGLFPBuilder* builder,
                                            const TransformedCoordsArray& coords,
                                            const TextureSamplerArray& samplers) {
     const GrTextureDomain& domain = fp.cast<GrMatrixConvolutionEffect>().domain();
-
-    fBoundsUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility,
-                                     kVec4f_GrSLType, "Bounds");
     fImageIncrementUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility,
                                              kVec2f_GrSLType, "ImageIncrement");
     fKernelUni = builder->addUniformArray(GrGLProgramBuilder::kFragment_Visibility,