Remove safe-browsing false-positive tracking.

chrome/browser/safe_browsing/safe_browsing_store_file.cc

Index: chrome/browser/safe_browsing/safe_browsing_store_file.cc
diff --git a/chrome/browser/safe_browsing/safe_browsing_store_file.cc b/chrome/browser/safe_browsing/safe_browsing_store_file.cc
index 628907c0e4215e87bcef333afcb4af18ae523b81..10442c4e439478b14e743a1ca3a7bfa5b2fedd17 100644
--- a/chrome/browser/safe_browsing/safe_browsing_store_file.cc
+++ b/chrome/browser/safe_browsing/safe_browsing_store_file.cc
@@ -476,7 +476,6 @@ bool SafeBrowsingStoreFile::FinishChunk() {
 
 bool SafeBrowsingStoreFile::DoUpdate(
     const std::vector<SBAddFullHash>& pending_adds,
-    const std::set<SBPrefix>& prefix_misses,
     SBAddPrefixes* add_prefixes_result,
     std::vector<SBAddFullHash>* add_full_hashes_result) {
   DCHECK(file_.get() || empty_);
@@ -600,10 +599,6 @@ bool SafeBrowsingStoreFile::DoUpdate(
   add_full_hashes.insert(add_full_hashes.end(),
                          pending_adds.begin(), pending_adds.end());
 
-  // Check how often a prefix was checked which wasn't in the
-  // database.
-  SBCheckPrefixMisses(add_prefixes, prefix_misses);
-
   // Knock the subs from the adds and process deleted chunks.
   SBProcessSubs(&add_prefixes, &sub_prefixes,
                 &add_full_hashes, &sub_full_hashes,
@@ -675,16 +670,12 @@ bool SafeBrowsingStoreFile::DoUpdate(
 
 bool SafeBrowsingStoreFile::FinishUpdate(
     const std::vector<SBAddFullHash>& pending_adds,
-    const std::set<SBPrefix>& prefix_misses,
     SBAddPrefixes* add_prefixes_result,
     std::vector<SBAddFullHash>* add_full_hashes_result) {
   DCHECK(add_prefixes_result);
   DCHECK(add_full_hashes_result);
 
-  bool ret = DoUpdate(pending_adds, prefix_misses,
-                      add_prefixes_result, add_full_hashes_result);
-
-  if (!ret) {
+  if (!DoUpdate(pending_adds, add_prefixes_result, add_full_hashes_result)) {
     CancelUpdate();
     return false;
   }