bench_graph_svg: more sorting to get deterministic results
TBR=benchen
Review URL: https://codereview.appspot.com/7333045

git-svn-id: http://skia.googlecode.com/svn/trunk@7745 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/bench/bench_graph_svg.py b/bench/bench_graph_svg.py
index e6aa2e9..1bcb7f5 100644
--- a/bench/bench_graph_svg.py
+++ b/bench/bench_graph_svg.py
@@ -106,7 +106,9 @@
     
     (str, {str, str}, Number, Number) -> {int:[BenchDataPoints]}"""
     revision_data_points = {} # {revision : [BenchDataPoints]}
-    for bench_file in os.listdir(directory):
+    file_list = os.listdir(directory)
+    file_list.sort()
+    for bench_file in file_list:
         file_name_match = re.match('bench_r(\d+)_(\S+)', bench_file)
         if (file_name_match is None):
             continue