Domain Reliability: Add a collector and a few configs.

components/domain_reliability/BUILD.gn

Index: components/domain_reliability/BUILD.gn
diff --git a/components/domain_reliability/BUILD.gn b/components/domain_reliability/BUILD.gn
index edead2765e402c1d8e4dc20243e9e5a66a26c6c5..160724faf08c169b464edf68b68405fb6bb99b54 100644
--- a/components/domain_reliability/BUILD.gn
+++ b/components/domain_reliability/BUILD.gn
@@ -18,10 +18,13 @@ action("bake_in_configs") {
     "baked_in_configs/c_youtube_com.json",
     "baked_in_configs/clients2_google_com.json",
     "baked_in_configs/docs_google_com.json",
+    "baked_in_configs/gcp_gvt2_com.json",
+    "baked_in_configs/gcp_gvt6_com.json",
     "baked_in_configs/google-analytics_com.json",
     "baked_in_configs/googlevideo_com.json",
     "baked_in_configs/gvt1_com.json",
     "baked_in_configs/gvt2_com.json",
+    "baked_in_configs/gvt6_com.json",
     "baked_in_configs/ssl_gstatic_com.json",
     "baked_in_configs/www_google_com.json",
   ]