[Telemetry] Update all WPR json files to the new format.

tools/perf/page_sets/data/tough_path_rendering_cases.json

Index: tools/perf/page_sets/data/tough_path_rendering_cases.json
diff --git a/tools/perf/page_sets/data/tough_path_rendering_cases.json b/tools/perf/page_sets/data/tough_path_rendering_cases.json
index 1f886b36dc98258017b4f1ac6bd6777d1fb7f369..fe26a07aca2c98951145ada315b003f8bdd4c9dc 100644
--- a/tools/perf/page_sets/data/tough_path_rendering_cases.json
+++ b/tools/perf/page_sets/data/tough_path_rendering_cases.json
@@ -1,17 +1,24 @@
 {
     "archives": {
-        "tough_path_rendering_cases_000.wpr": [
-            "http://ie.microsoft.com/testdrive/Performance/Chalkboard/"
-        ],
-        "tough_path_rendering_cases_001.wpr": [
-            "http://www.craftymind.com/factory/guimark2/HTML5ChartingTest.html"
-        ],
-        "tough_path_rendering_cases_002.wpr": [
-            "MotionMark Canvas Stroke Shapes",
-            "https://testdrive-archive.azurewebsites.net/performance/chalkboard/",
-            "GUIMark Vector Chart Test",
-            "MotionMark Canvas Fill Shapes"
-        ]
+        "GUIMark Vector Chart Test": {
+            "DEFAULT": "tough_path_rendering_cases_002.wpr"
+        },
+        "MotionMark Canvas Fill Shapes": {
+            "DEFAULT": "tough_path_rendering_cases_002.wpr"
+        },
+        "MotionMark Canvas Stroke Shapes": {
+            "DEFAULT": "tough_path_rendering_cases_002.wpr"
+        },
+        "http://ie.microsoft.com/testdrive/Performance/Chalkboard/": {
+            "DEFAULT": "tough_path_rendering_cases_000.wpr"
+        },
+        "http://www.craftymind.com/factory/guimark2/HTML5ChartingTest.html": {
+            "DEFAULT": "tough_path_rendering_cases_001.wpr"
+        },
+        "https://testdrive-archive.azurewebsites.net/performance/chalkboard/": {
+            "DEFAULT": "tough_path_rendering_cases_002.wpr"
+        }
     },
-    "description": "Describes the Web Page Replay archives for a story set. Don't edit by hand! Use record_wpr for updating."
+    "description": "Describes the Web Page Replay archives for a story set. Don't edit by hand! Use record_wpr for updating.",
+    "platform_specific": true
 }