Make all GrFragmentProcessors GL independent.

src/gpu/effects/GrMatrixConvolutionEffect.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrMatrixConvolutionEffect_DEFINED
 #define GrMatrixConvolutionEffect_DEFINED
 
@@ skipping 48 matching lines @@
     GrMatrixConvolutionEffect(GrTexture*,
                               const SkIRect& bounds,
                               const SkISize& kernelSize,
                               const SkScalar* kernel,
                               SkScalar gain,
                               SkScalar bias,
                               const SkIPoint& kernelOffset,
                               GrTextureDomain::Mode tileMode,
                               bool convolveAlpha);
 
-    GrGLFragmentProcessor* onCreateGLInstance() const override;
+    GrGLSLFragmentProcessor* onCreateGLInstance() const override;
 
     void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override;
 
     bool onIsEqual(const GrFragmentProcessor&) const override;
 
     void onComputeInvariantOutput(GrInvariantOutput* inout) const override {
         // TODO: Try to do better?
         inout->mulByUnknownFourComponents();
     }
 
     SkIRect         fBounds;
     SkISize         fKernelSize;
     float           fKernel[MAX_KERNEL_SIZE];
     float           fGain;
     float           fBias;
     float           fKernelOffset[2];
     bool            fConvolveAlpha;
     GrTextureDomain fDomain;
 
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
     typedef GrSingleTextureEffect INHERITED;
 };
 
 #endif