Try out SkMatrix::Concat.

src/record/SkRecordDraw.cpp

Index: src/record/SkRecordDraw.cpp
diff --git a/src/record/SkRecordDraw.cpp b/src/record/SkRecordDraw.cpp
index 5df1650a5e9ba09924a283ffc1ad112225c92f83..2bf7076bb05c8cd633acac3820b8b00c4ae3153e 100644
--- a/src/record/SkRecordDraw.cpp
+++ b/src/record/SkRecordDraw.cpp
@@ -38,13 +38,7 @@ DRAW(PopCull, popCull());
 DRAW(PushCull, pushCull(r.rect));
 DRAW(Clear, clear(r.color));
 DRAW(Concat, concat(r.matrix));
-
-// We can't clobber the canvas' initial CTM when calling setMatrix.
-template <> void Draw::draw(const SetMatrix& r) {
-    SkMatrix ctm;
-    ctm.setConcat(fInitialCTM, r.matrix);
-    fCanvas->setMatrix(ctm);
-}
+DRAW(SetMatrix, setMatrix(SkMatrix::Concat(fInitialCTM, r.matrix)));
 
 DRAW(ClipPath, clipPath(r.path, r.op, r.doAA));
 DRAW(ClipRRect, clipRRect(r.rrect, r.op, r.doAA));