Added incident report for variations seed signature mismatch.

chrome/browser/metrics/variations/variations_service.h

Index: chrome/browser/metrics/variations/variations_service.h
diff --git a/chrome/browser/metrics/variations/variations_service.h b/chrome/browser/metrics/variations/variations_service.h
index 108d621dbde88993ef1fd273fd7d5a3b7d5c0ce5..1f34bee2e1f6fcd6bf5d9a0579b10b1160f0204d 100644
--- a/chrome/browser/metrics/variations/variations_service.h
+++ b/chrome/browser/metrics/variations/variations_service.h
@@ -16,6 +16,7 @@
 #include "base/time/time.h"
 #include "chrome/browser/metrics/variations/variations_request_scheduler.h"
 #include "chrome/browser/metrics/variations/variations_seed_store.h"
+#include "chrome/browser/safe_browsing/safe_browsing_service.h"

[grt (UTC plus 2), 2014/10/14 01:28:30]

unused

[Georges Khalil, 2014/10/14 13:51:10]

Done.

 #include "chrome/browser/web_resource/resource_request_allowed_notifier.h"
 #include "chrome/common/chrome_version_info.h"
 #include "components/variations/variations_seed_simulator.h"
@@ -133,6 +134,13 @@ class VariationsService
     policy_pref_service_ = service;
   }
 
+  // Returns true if the variations seed signature is invalid, in which case
+  // it also sets invalid_signature to that value.
+  bool IsVariationsSeedSignatureInvalid(std::string* invalid_signature) const {
+    return seed_store_.GetInvalidSignature(invalid_signature);
+  }
+
+
  protected:
   // Starts the fetching process once, where |OnURLFetchComplete| is called with
   // the response.