DM: this must have been missing from the previous CL

dm/DMSrcSinkAndroid.h

Index: dm/DMSrcSinkAndroid.h
diff --git a/dm/DMSrcSinkAndroid.h b/dm/DMSrcSinkAndroid.h
index 02eb1c98c1b07a1fe4c55d4e8452e0abe3d1b316..2d7ad65ca0f352fb14141472166fc57def423a61 100644
--- a/dm/DMSrcSinkAndroid.h
+++ b/dm/DMSrcSinkAndroid.h
@@ -23,7 +23,7 @@ public:
     HWUISink() { }
 
     Error draw(const Src&, SkBitmap*, SkWStream*, SkString*) const override;
-    int enclave() const override { return kGPU_Enclave; }
+    bool serial() const override { return true; }
     const char* fileExtension() const override { return "png"; }
     SinkFlags flags() const override { return SinkFlags{ SinkFlags::kGPU, SinkFlags::kDirect }; }
 };
@@ -37,7 +37,7 @@ public:
     explicit ViaAndroidSDK(Sink*);
 
     Error draw(const Src&, SkBitmap*, SkWStream*, SkString*) const override;
-    int enclave() const override { return fSink->enclave(); }
+    bool serial() const override { return fSink->serial(); }
     const char* fileExtension() const override { return fSink->fileExtension(); }
     SinkFlags flags() const override {
         SinkFlags flags = fSink->flags();