effects: Replaces uses of GrAssert with SkASSERT.

src/effects/SkGpuBlurUtils.cpp

Index: src/effects/SkGpuBlurUtils.cpp
diff --git a/src/effects/SkGpuBlurUtils.cpp b/src/effects/SkGpuBlurUtils.cpp
index 5fc51811aa4b722a373fa0c396d35489d5ad5a78..fce5b6bc3026f4cb1fcfa0c3fef041bf1e304459 100644
--- a/src/effects/SkGpuBlurUtils.cpp
+++ b/src/effects/SkGpuBlurUtils.cpp
@@ -35,7 +35,7 @@ static float adjust_sigma(float sigma, int *scaleFactor, int *radius) {
         sigma *= 0.5f;
     }
     *radius = static_cast<int>(ceilf(sigma * 3.0f));
-    GrAssert(*radius <= GrConvolutionEffect::kMaxKernelRadius);
+    SkASSERT(*radius <= GrConvolutionEffect::kMaxKernelRadius);
     return sigma;
 }
 
@@ -119,7 +119,7 @@ GrTexture* GaussianBlur(GrContext* context,
                         bool cropToRect,
                         float sigmaX,
                         float sigmaY) {
-    GrAssert(NULL != context);
+    SkASSERT(NULL != context);
 
     GrContext::AutoRenderTarget art(context);
 
@@ -140,7 +140,7 @@ GrTexture* GaussianBlur(GrContext* context,
 
     GrContext::AutoClip acs(context, SkRect::MakeWH(srcRect.width(), srcRect.height()));
 
-    GrAssert(kBGRA_8888_GrPixelConfig == srcTexture->config() ||
+    SkASSERT(kBGRA_8888_GrPixelConfig == srcTexture->config() ||
              kRGBA_8888_GrPixelConfig == srcTexture->config() ||
              kAlpha_8_GrPixelConfig == srcTexture->config());