Finch kill switch feature for background tab.

chrome/browser/android/chrome_feature_list.cc

Index: chrome/browser/android/chrome_feature_list.cc
diff --git a/chrome/browser/android/chrome_feature_list.cc b/chrome/browser/android/chrome_feature_list.cc
index a4e23df344878c7623a2f2c995c48b9e48099228..0fa47fd29c7b61d3bfd4dbd89d145800161a9cb6 100644
--- a/chrome/browser/android/chrome_feature_list.cc
+++ b/chrome/browser/android/chrome_feature_list.cc
@@ -48,6 +48,7 @@ const base::Feature* kFeaturesExposedToJava[] = {
     &kAndroidPayIntegrationV1,
     &kAndroidPayIntegrationV2,
     &kAndroidPaymentApps,
+    &kCCTBackgroundTab,
     &kCCTExternalLinkHandling,
     &kCCTPostMessageAPI,
     &kChromeHomeFeature,
@@ -111,6 +112,9 @@ const base::Feature kAndroidPayIntegrationV2{"AndroidPayIntegrationV2",
 const base::Feature kAndroidPaymentApps{"AndroidPaymentApps",
                                         base::FEATURE_DISABLED_BY_DEFAULT};
 
+const base::Feature kCCTBackgroundTab{"CCTBackgroundTab",
+                                      base::FEATURE_ENABLED_BY_DEFAULT};
+
 const base::Feature kCCTExternalLinkHandling{"CCTExternalLinkHandling",
                                              base::FEATURE_ENABLED_BY_DEFAULT};