Revert "Added incident report for variations seed signature mismatch."

chrome/common/safe_browsing/csd.proto

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // Client side phishing and malware detection request and response
 // protocol buffers.  Those protocol messages should be kept in sync
 // with the server implementation.
 //
 // If you want to change this protocol definition or you have questions
 // regarding its format please contact chrome-anti-phishing@googlegroups.com.
@@ skipping 344 matching lines @@
     message BinaryIntegrityIncident {
       optional string file_basename = 1;
       optional ClientDownloadRequest.SignatureInfo signature = 2;
     }
     message BlacklistLoadIncident {
       optional string path = 1;
       optional ClientDownloadRequest.Digests digest = 2;
       optional string version = 3;
       optional bool blacklist_initialized = 4;
     }
-    message VariationsSeedSignatureIncident {
-      optional string variations_seed_signature = 1;
-    }
     optional int64 incident_time_msec = 1;
     optional TrackedPreferenceIncident tracked_preference = 2;
     optional BinaryIntegrityIncident binary_integrity = 3;
     optional BlacklistLoadIncident blacklist_load = 4;
-    optional VariationsSeedSignatureIncident variations_seed_signature = 5;
   }
 
   repeated IncidentData incident = 1;
 
   message DownloadDetails {
     optional bytes token = 1;
     optional ClientDownloadRequest download = 2;
     optional int64 download_time_msec = 3;
     optional int64 open_time_msec = 4;
   }
@@ skipping 65 matching lines @@
 }
 
 message ClientIncidentResponse {
   optional bytes token = 1;
   optional bool download_requested = 2;
 
   message EnvironmentRequest { optional int32 dll_index = 1; }
 
   repeated EnvironmentRequest environment_requests = 3;
 }