Added incident report for variations seed signature mismatch.

chrome/browser/metrics/variations/variations_seed_store.h

Index: chrome/browser/metrics/variations/variations_seed_store.h
diff --git a/chrome/browser/metrics/variations/variations_seed_store.h b/chrome/browser/metrics/variations/variations_seed_store.h
index c81b15e3e0967def607055df822dd13cd7ed7371..8082d12a20a99edf78163e65656cf2c2f51175b3 100644
--- a/chrome/browser/metrics/variations/variations_seed_store.h
+++ b/chrome/browser/metrics/variations/variations_seed_store.h
@@ -10,6 +10,7 @@
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/time/time.h"
+#include "chrome/browser/safe_browsing/incident_reporting/add_incident_callback.h"

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

unused

[Georges Khalil, 2014/10/14 13:51:09]

Done.

 
 class PrefService;
 class PrefRegistrySimple;
@@ -55,6 +56,11 @@ class VariationsSeedStore {
   // Registers Local State prefs used by this class.
   static void RegisterPrefs(PrefRegistrySimple* registry);
 
+  // Returns the bad signature that was loaded from the config or an empty

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

please document return value as well as whether or not |invalid_signature| is
modified when false is returned.

[Georges Khalil, 2014/10/14 13:51:09]

Done.

+  // string if not the case.
+  bool GetInvalidSignature(std::string* invalid_signature) const;
+  //  std::string GetInvalidSignature() const { return invalid_signature_; }

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

remove

[Georges Khalil, 2014/10/14 13:51:09]

Done.

+
  protected:
   // Note: UMA histogram enum - don't re-order or remove entries.
   enum VerifySignatureResult {
@@ -82,6 +88,10 @@ class VariationsSeedStore {
   // Clears all prefs related to variations seed storage.
   void ClearPrefs();
 
+  // Keeps track of an invalid signature.
+  bool is_invalid_signature_;
+  std::string invalid_signature_;
+
   // The pref service used to persist the variations seed.
   PrefService* local_state_;