change asABitmap to isABitmap on shader

src/effects/gradients/SkTwoPointConicalGradient.cpp

Index: src/effects/gradients/SkTwoPointConicalGradient.cpp
diff --git a/src/effects/gradients/SkTwoPointConicalGradient.cpp b/src/effects/gradients/SkTwoPointConicalGradient.cpp
index 56b9458605440736946f1501da30c3db06deab8b..1cdb19e1b9bc2b3726b2facae8c005dc64fb5ef1 100644
--- a/src/effects/gradients/SkTwoPointConicalGradient.cpp
+++ b/src/effects/gradients/SkTwoPointConicalGradient.cpp
@@ -292,35 +292,6 @@ void SkTwoPointConicalGradient::TwoPointConicalGradientContext::shadeSpan(
     }
 }
 
-SkShader::BitmapType SkTwoPointConicalGradient::asABitmap(
-    SkBitmap* bitmap, SkMatrix* matrix, SkShader::TileMode* xy) const {
-    SkPoint diff = fCenter2 - fCenter1;
-    SkScalar diffLen = 0;
-
-    if (bitmap) {
-        this->getGradientTableBitmap(bitmap);
-    }
-    if (matrix) {
-        diffLen = diff.length();
-    }
-    if (matrix) {
-        if (diffLen) {
-            SkScalar invDiffLen = SkScalarInvert(diffLen);
-            // rotate to align circle centers with the x-axis
-            matrix->setSinCos(-SkScalarMul(invDiffLen, diff.fY),
-                              SkScalarMul(invDiffLen, diff.fX));
-        } else {
-            matrix->reset();
-        }
-        matrix->preTranslate(-fCenter1.fX, -fCenter1.fY);
-    }
-    if (xy) {
-        xy[0] = fTileMode;
-        xy[1] = kClamp_TileMode;
-    }
-    return kTwoPointConical_BitmapType;
-}
-
 // Returns the original non-sorted version of the gradient
 SkShader::GradientType SkTwoPointConicalGradient::asAGradient(
     GradientInfo* info) const {