make the filter mode for GrTextureAccess an enum so we can plumb down
the paint's filter modes to the GPU

BUG=
R=bsalomon@google.com

Review URL: https://codereview.chromium.org/20362002

git-svn-id: http://skia.googlecode.com/svn/trunk@10368 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/effects/GrSingleTextureEffect.h b/src/gpu/effects/GrSingleTextureEffect.h
index 3e0af65..74ca9f9 100644
--- a/src/gpu/effects/GrSingleTextureEffect.h
+++ b/src/gpu/effects/GrSingleTextureEffect.h
@@ -30,7 +30,8 @@
     /** unfiltered, clamp mode */
     GrSingleTextureEffect(GrTexture*, const SkMatrix&, CoordsType = kLocal_CoordsType);
     /** clamp mode */
-    GrSingleTextureEffect(GrTexture*, const SkMatrix&, bool bilerp, CoordsType = kLocal_CoordsType);
+    GrSingleTextureEffect(GrTexture*, const SkMatrix&, GrTextureParams::FilterMode filterMode, 
+                          CoordsType = kLocal_CoordsType);
     GrSingleTextureEffect(GrTexture*,
                           const SkMatrix&,
                           const GrTextureParams&,