Make XML compilation conditional.

dm/DMSrcSink.cpp

Index: dm/DMSrcSink.cpp
diff --git a/dm/DMSrcSink.cpp b/dm/DMSrcSink.cpp
index 258e94e7e6bff8a5179073863898c0c17aaed62d..78fa140b31686a0f183a410edc1e0921f5d2b21b 100644
--- a/dm/DMSrcSink.cpp
+++ b/dm/DMSrcSink.cpp
@@ -34,7 +34,6 @@
 #include "SkSVGCanvas.h"
 #include "SkStream.h"
 #include "SkTLogic.h"
-#include "SkXMLWriter.h"
 #include "SkSwizzler.h"
 #include <functional>
 
@@ -46,6 +45,10 @@
     #include "qcms.h"
 #endif
 
+#if defined(SK_XML)
+    #include "SkXMLWriter.h"
+#endif
+
 DEFINE_bool(multiPage, false, "For document-type backends, render the source"
             " into multiple pages");
 DEFINE_bool(RAW_threading, true, "Allow RAW decodes to run on multiple threads?");
@@ -1205,11 +1208,15 @@ Error SKPSink::draw(const Src& src, SkBitmap*, SkWStream* dst, SkString*) const
 SVGSink::SVGSink() {}
 
 Error SVGSink::draw(const Src& src, SkBitmap*, SkWStream* dst, SkString*) const {
+#if defined(SK_XML)
     SkAutoTDelete<SkXMLWriter> xmlWriter(new SkXMLStreamWriter(dst));
     SkAutoTUnref<SkCanvas> canvas(SkSVGCanvas::Create(
         SkRect::MakeWH(SkIntToScalar(src.size().width()), SkIntToScalar(src.size().height())),
         xmlWriter));
     return src.draw(canvas);
+#else
+    return Error("SVG sink is disabled.");
+#endif // SK_XML
 }
 
 /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/