Update the testing config with the new experiments for PVer4.

testing/variations/fieldtrial_testing_config.json

Index: testing/variations/fieldtrial_testing_config.json
diff --git a/testing/variations/fieldtrial_testing_config.json b/testing/variations/fieldtrial_testing_config.json
index fdffeb46d76d73f9ca38823ed61a6252919ab613..2877af5be63cafe2b331c7cb346039b563cf18b7 100644
--- a/testing/variations/fieldtrial_testing_config.json
+++ b/testing/variations/fieldtrial_testing_config.json
@@ -1698,7 +1698,27 @@
             ],
             "experiments": [
                 {
-                    "name": "Enabled"
+                    "name": "Control",
+                    "disable_features": [
+                        "SafeBrowsingV4HybridEnabled",
+                        "SafeBrowsingV4LocalDatabaseManagerEnabled"
+                    ]
+                },
+                {
+                    "name": "V4JustUpdate",
+                    "enable_features": [
+                        "SafeBrowsingV4LocalDatabaseManagerEnabled"
+                    ]
+                },
+                {
+                    "name": "V4Hybrid",

[Alexei Svitkine (slow), 2016/10/25 20:33:09]

The first group is the one that receives testing. So suggest putting V4Hybrid
first if it's the one you're planning to launch.

+                    "enable_features": [
+                        "SafeBrowsingV4HybridEnabled",
+                        "SafeBrowsingV4LocalDatabaseManagerEnabled"
+                    ]
+                },
+                {
+                    "name": "Default"
                 }
             ]
         }