Add fieldtrial config for V8CacheInlineScriptCode

Bug: chromium:823663
Change-Id: Icab63d84322b136255d0ea8ca4207529087142b4
Reviewed-on: https://chromium-review.googlesource.com/1044197Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#556806}

testing/variations/fieldtrial_testing_config.json

@@ -4000,6 +4000,24 @@
             ]
         }
     ],
+    "V8CacheInlineScriptCode": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "linux",
+                "win"
+            ],
+            "experiments": [
+                {
+                    "name": "CacheInlineScriptCode",
+                    "enable_features": [
+                        "CacheInlineScriptCode"
+                    ]
+                }
+            ]
+        }
+    ],
     "V8ContextSnapshot": [
         {
             "platforms": [