AMP Background Tab: field trial testing configuration.

testing/variations/fieldtrial_testing_config.json

 {
     "AlternateComponentUrls": [
         {
             "platforms": [
                 "android",
                 "chromeos",
                 "ios",
                 "linux",
                 "mac",
                 "win"
             ],
             "experiments": [
                 {
                     "name": "AlternateComponentUrls",
                     "enable_features": [
                         "AlternateComponentUrls"
                     ]
                 }
             ]
         }
     ],
+    "AmpBackgoundTab": [

[Ilya Sherman, 2017/06/26 19:19:33]

nit: s/gound/ground

[mattcary, 2017/06/27 07:54:08]

Done.

+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "AmpBackgroundTab",

[Ilya Sherman, 2017/06/22 16:42:31]

Actually, sorry, I'm a bit confused.  Reading the server-side config, it looks
like this is the default behavior.  If so, what's the reason for adding a
testing config entry for it?

+                    "enable_features": [
+                        "CCTBackgroundTab"
+                    ]
+                }
+            ]
+        }
+    ],
     "AndroidAIAFetching": [
         {
             "platforms": [
                 "android"
             ],
             "experiments": [
                 {
                     "name": "Enabled",
                     "enable_features": [
                         "AndroidAIAFetching"
@@ skipping 3297 matching lines @@
                 {
                     "name": "Enabled",
                     "enable_features": [
                         "use-new-media-cache"
                     ]
                 }
             ]
         }
     ]
 }