Re-re-land "added GrSkSLFP and converted DitherEffect to use it"

This reverts commit 6c48e4d11ce80fa5cfef56e13b2d5847fe94a7cc.

Bug: skia:
Change-Id: I7ee78990fc30eec545d1856e59eb6e0573089426
Reviewed-on: https://skia-review.googlesource.com/144348
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/sksl/ir/SkSLFieldAccess.h b/src/sksl/ir/SkSLFieldAccess.h
index 0f66dec5a4..b3bd05096e 100644
--- a/src/sksl/ir/SkSLFieldAccess.h
+++ b/src/sksl/ir/SkSLFieldAccess.h
@@ -35,6 +35,11 @@ struct FieldAccess : public Expression {
         return fBase->hasSideEffects();
     }
 
+    std::unique_ptr<Expression> clone() const override {
+        return std::unique_ptr<Expression>(new FieldAccess(fBase->clone(), fFieldIndex,
+                                                           fOwnerKind));
+    }
+
     String description() const override {
         return fBase->description() + "." + fBase->fType.fields()[fFieldIndex].fName;
     }