DM runs more than 100k tests now.

BUG=skia:

Review URL: https://codereview.chromium.org/1217493006
diff --git a/dm/DM.cpp b/dm/DM.cpp
index 5cabae6..df16182 100644
--- a/dm/DM.cpp
+++ b/dm/DM.cpp
@@ -93,7 +93,7 @@
     }
     auto pending = sk_atomic_dec(&gPending)-1;
     if (!FLAGS_quiet) {
-        SkDebugf("%s(%4d/%-4dMB %5d) %s\t%s%s%s", FLAGS_verbose ? "\n" : kSkOverwriteLine
+        SkDebugf("%s(%4d/%-4dMB %6d) %s\t%s%s%s", FLAGS_verbose ? "\n" : kSkOverwriteLine
                                            , sk_tools::getCurrResidentSetSizeMB()
                                            , sk_tools::getMaxResidentSetSizeMB()
                                            , pending