Fix a translate issue with saveLayer

Bug: 28667141

saveLayer clips the layer to the size it needs to
be and will translate content if necessary, but
the drawLayerOp that results from that was not
translated to handle the shifted draw content.

This fixes that

Change-Id: I3c9ffd5d0282fa1b958bced94c25e9744281e9be
diff --git a/libs/hwui/OpDumper.h b/libs/hwui/OpDumper.h
index c99b517..a82289c 100644
--- a/libs/hwui/OpDumper.h
+++ b/libs/hwui/OpDumper.h
@@ -26,6 +26,7 @@
 class OpDumper {
 public:
     static void dump(const RecordedOp& op, std::ostream& output, int level = 0);
+    static const char* opName(const RecordedOp& op);
 };
 
 }; // namespace uirenderer