Revert of switch to isABitmap, deprecate SK_SUPPORT_LEGACY_SHADERBITMAPTYPE

src/core/SkLocalMatrixShader.h

Index: src/core/SkLocalMatrixShader.h
diff --git a/src/core/SkLocalMatrixShader.h b/src/core/SkLocalMatrixShader.h
index a108259461d347cad72e94824e3f577d8615e3a8..9c6a526f7b1356511be2373b79c336ff8a6f58f0 100644
--- a/src/core/SkLocalMatrixShader.h
+++ b/src/core/SkLocalMatrixShader.h
@@ -21,6 +21,11 @@
 
     size_t contextSize() const override {
         return fProxyShader->contextSize();
+    }
+
+    virtual BitmapType asABitmap(SkBitmap* bitmap, SkMatrix* matrix,
+                                 TileMode* mode) const override {
+        return fProxyShader->asABitmap(bitmap, matrix, mode);
     }
 
     GradientType asAGradient(GradientInfo* info) const override {
@@ -53,10 +58,6 @@
     void flatten(SkWriteBuffer&) const override;
     Context* onCreateContext(const ContextRec&, void*) const override;
 
-    bool onIsABitmap(SkBitmap* bitmap, SkMatrix* matrix, TileMode* mode) const override {
-        return fProxyShader->isABitmap(bitmap, matrix, mode);
-    }
-
 private:
     SkAutoTUnref<SkShader> fProxyShader;