Add AutofillImportNonFocusableCreditCardForms to fieldtrial_testing_config

Change-Id: Ifd7ba15733df360dfa52afa30d5feac8d68a0494
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1549990Reviewed-by: Steven Holte <holte@chromium.org>
Commit-Queue: Hao Zhang <hozhng@google.com>
Cr-Commit-Position: refs/heads/master@{#647104}

testing/variations/fieldtrial_testing_config.json

@@ -679,6 +679,26 @@
             ]
         }
     ],
+    "AutofillImportNonFocusableCreditCardForms": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "ios",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "AutofillImportNonFocusableCreditCardForms"
+                    ]
+                }
+            ]
+        }
+    ],
     "AutofillLocalCardMigration": [
         {
             "platforms": [