add dump for SkWStream inst-leaks



git-svn-id: http://skia.googlecode.com/svn/trunk@4349 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gm/gmmain.cpp b/gm/gmmain.cpp
index 0c31975..ca18e49 100644
--- a/gm/gmmain.cpp
+++ b/gm/gmmain.cpp
@@ -1088,6 +1088,7 @@
 
 #ifdef SK_DEBUG
     SkRefCnt::CheckInstanceCount();
+    SkWStream::CheckInstanceCount();
 #endif
 
     return (0 == testsFailed) ? 0 : -1;