render_pictures: add --mismatchPath flag

When set, it will only write out images that don't match expectations.

BUG=skia:1942
R=rmistry@google.com

Author: epoger@google.com

Review URL: https://codereview.chromium.org/283123002

git-svn-id: http://skia.googlecode.com/svn/trunk@14748 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tools/PictureBenchmark.cpp b/tools/PictureBenchmark.cpp
index 2950e7d..6c0325e 100644
--- a/tools/PictureBenchmark.cpp
+++ b/tools/PictureBenchmark.cpp
@@ -74,7 +74,7 @@
         return;
     }
 
-    fRenderer->init(pict, NULL, NULL, false);
+    fRenderer->init(pict, NULL, NULL, NULL, false);
 
     // We throw this away to remove first time effects (such as paging in this program)
     fRenderer->setup();