Made more benchs non-rendering

http://codereview.appspot.com/6498132/



git-svn-id: http://skia.googlecode.com/svn/trunk@5562 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/bench/DecodeBench.cpp b/bench/DecodeBench.cpp
index c85b715..6593d10 100644
--- a/bench/DecodeBench.cpp
+++ b/bench/DecodeBench.cpp
@@ -32,6 +32,7 @@
             }
         }
         fName.printf("decode_%s_%s", gConfigName[c], fname);
+        fIsRendering = false;
     }
 
 protected: