Fix spelling error.



git-svn-id: http://skia.googlecode.com/svn/trunk@7376 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/effects/GrConvolutionEffect.h b/src/gpu/effects/GrConvolutionEffect.h
index 0724048..b2b24e5 100644
--- a/src/gpu/effects/GrConvolutionEffect.h
+++ b/src/gpu/effects/GrConvolutionEffect.h
@@ -31,7 +31,7 @@
     }
 
     /// Convolve with a Gaussian kernel
-    static GrEffectRef* CreateGuassian(GrTexture* tex,
+    static GrEffectRef* CreateGaussian(GrTexture* tex,
                                        Direction dir,
                                        int halfWidth,
                                        float gaussianSigma) {