[wpr-go] Switch top_10.json to use go

Bug: 730036
Change-Id: I2f7f64619276df1ab75c2514507dd6c0581dc045
Reviewed-on: https://chromium-review.googlesource.com/590413Reviewed-by: Ned Nguyen <nednguyen@google.com>
Commit-Queue: Helen Li <xunjieli@chromium.org>
Cr-Commit-Position: refs/heads/master@{#490947}

tools/perf/page_sets/data/top_10.json

 {
     "archives": {
         "Facebook": {
-            "DEFAULT": "top_10_001.wpr"
+            "DEFAULT": "top_10_001.wprgo"
         },
         "http://en.wikipedia.org/wiki/Wikipedia": {
-            "DEFAULT": "top_10_000.wpr"
+            "DEFAULT": "top_10_000.wprgo"
         },
         "http://www.amazon.com": {
-            "DEFAULT": "top_10_000.wpr"
+            "DEFAULT": "top_10_000.wprgo"
         },
         "http://www.ask.com/": {
-            "DEFAULT": "top_10_000.wpr"
+            "DEFAULT": "top_10_000.wprgo"
         },
         "http://www.bing.com/": {
-            "DEFAULT": "top_10_000.wpr"
+            "DEFAULT": "top_10_000.wprgo"
         },
         "http://www.facebook.com/barackobama": {
-            "DEFAULT": "top_10_000.wpr"
+            "DEFAULT": "top_10_000.wprgo"
         },
         "http://www.yahoo.com/": {
-            "DEFAULT": "top_10_000.wpr"
+            "DEFAULT": "top_10_000.wprgo"
         },
         "http://www.youtube.com": {
-            "DEFAULT": "top_10_000.wpr"
+            "DEFAULT": "top_10_000.wprgo"
         },
         "https://mail.google.com/mail/": {
-            "DEFAULT": "top_10_000.wpr"
+            "DEFAULT": "top_10_000.wprgo"
         },
         "https://www.google.com/#hl=en&q=barack+obama": {
-            "DEFAULT": "top_10_000.wpr"
+            "DEFAULT": "top_10_000.wprgo"
         },
         "https://www.google.com/calendar/": {
-            "DEFAULT": "top_10_000.wpr"
+            "DEFAULT": "top_10_000.wprgo"
         }
     },
     "description": "Describes the Web Page Replay archives for a story set. Don't edit by hand! Use record_wpr for updating.",

tools/perf/page_sets/data/top_10_000.wpr.sha1

-a2f94be09e257aad66a044f4e9cbb60845af1fb6
\ No newline at end of file

tools/perf/page_sets/data/top_10_000.wprgo.sha1

+d520f82882a78ea153f29c235b5d4e677ffa2c38
\ No newline at end of file

tools/perf/page_sets/data/top_10_001.wpr.sha1

-e9417ee214dd7d9fe3263b8b159ceb6e35a8c7ed
\ No newline at end of file

tools/perf/page_sets/data/top_10_001.wprgo.sha1

+6f4ef15dd0865e15bc7dd8e57cedac2848559f84
\ No newline at end of file