dm: log log

dm/DM.cpp

Index: dm/DM.cpp
diff --git a/dm/DM.cpp b/dm/DM.cpp
index f2c74e30725cdbff7f274c8fc2bc0e4c27632af7..6830ceeef776d7e0cece1381960f56590b829b51 100644
--- a/dm/DM.cpp
+++ b/dm/DM.cpp
@@ -987,6 +987,13 @@ struct Task {
             start(task.sink.tag.c_str(), task.src.tag.c_str(),
                   task.src.options.c_str(), name.c_str());
             Error err = task.sink->draw(*task.src, &bitmap, &stream, &log);
+            if (!log.isEmpty()) {
+                SkDebugf("%s %s %s %s:\n%s\n", task.sink.tag.c_str()
+                                             , task.src.tag.c_str()
+                                             , task.src.options.c_str()
+                                             , name.c_str()
+                                             , log.c_str());
+            }
             if (!err.isEmpty()) {
                 if (err.isFatal()) {
                     fail(SkStringPrintf("%s %s %s %s: %s",