Four new pages added to tough_scheduling_cases

tools/perf/page_sets/data/tough_scheduling_cases.json

Index: tools/perf/page_sets/data/tough_scheduling_cases.json
diff --git a/tools/perf/page_sets/data/tough_scheduling_cases.json b/tools/perf/page_sets/data/tough_scheduling_cases.json
new file mode 100644
index 0000000000000000000000000000000000000000..d1fbf66719f83fc8680929a3ae7872709f5146e2
--- /dev/null
+++ b/tools/perf/page_sets/data/tough_scheduling_cases.json
@@ -0,0 +1,11 @@
+{
+    "description": "Describes the Web Page Replay archives for a page set. Don't edit by hand! Use record_wpr for updating.", 
+    "archives": {
+        "tough_scheduling_cases_000.wpr": [
+            "http://www.latimes.com", 
+            "http://io9.com/the-10-most-shocking-characters-that-george-r-r-martin-1579481155/+tinaamini", 

[jdduke (slow), 2014/08/26 15:46:20]

We might get rid of the io9 case; it doesn't look very interesting in practice
any longer.

+            "http://ftw.usatoday.com/2014/05/spelling-bee-rules-shenanigans", 
+            "http://m.espn.go.com/nhl/rankings"
+        ]
+    }
+}