effects: Replaces uses of GrAssert with SkASSERT.

This is the first step on migrating from GrAssert to SkASSERT as requested by
Brian.

R=bsalomon@google.com, robertphillips@google.com, scroggo@google.com

Author: tfarina@chromium.org

Review URL: https://chromiumcodereview.appspot.com/22418006

git-svn-id: http://skia.googlecode.com/svn/trunk@10706 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/effects/gradients/SkTwoPointConicalGradient.cpp b/src/effects/gradients/SkTwoPointConicalGradient.cpp
index 37b49f0..664ec91 100644
--- a/src/effects/gradients/SkTwoPointConicalGradient.cpp
+++ b/src/effects/gradients/SkTwoPointConicalGradient.cpp
@@ -658,7 +658,7 @@
                                    const GrDrawEffect& drawEffect) {
     INHERITED::setData(uman, drawEffect);
     const GrConical2Gradient& data = drawEffect.castEffect<GrConical2Gradient>();
-    GrAssert(data.isDegenerate() == fIsDegenerate);
+    SkASSERT(data.isDegenerate() == fIsDegenerate);
     SkScalar centerX1 = data.center();
     SkScalar radius0 = data.radius();
     SkScalar diffRadius = data.diffRadius();