Added incident report for variations seed signature mismatch.

chrome/common/safe_browsing/csd.proto

Index: chrome/common/safe_browsing/csd.proto
diff --git a/chrome/common/safe_browsing/csd.proto b/chrome/common/safe_browsing/csd.proto
index ca77f3b91ef5c8e59ede8c7f8a0751e7231c9ec0..fcbcf73dff51ca5d1fd50a85079ddc2c7940b377 100644
--- a/chrome/common/safe_browsing/csd.proto
+++ b/chrome/common/safe_browsing/csd.proto
@@ -362,10 +362,12 @@ message ClientIncidentReport {
       optional string version = 3;
       optional bool blacklist_initialized = 4;
     }
+    message FinchConfigSignatureIncident { optional string signature_hash = 1; }
     optional int64 incident_time_msec = 1;
     optional TrackedPreferenceIncident tracked_preference = 2;
     optional BinaryIntegrityIncident binary_integrity = 3;
     optional BlacklistLoadIncident blacklist_load = 4;
+    optional FinchConfigSignatureIncident finch_config_signature = 5;
   }
 
   repeated IncidentData incident = 1;