Removes some dead database code

chrome/browser/history/history_backend.cc

Index: chrome/browser/history/history_backend.cc
diff --git a/chrome/browser/history/history_backend.cc b/chrome/browser/history/history_backend.cc
index 211a83a350d79e41eb0052008bb97f5a842c91c1..c78b575371e15c9cd030ccda5a84b7a422caee51 100644
--- a/chrome/browser/history/history_backend.cc
+++ b/chrome/browser/history/history_backend.cc
@@ -1085,47 +1085,6 @@ void HistoryBackend::QuerySegmentUsage(
   request->ForwardResult(request->handle(), &request->value.get());
 }
 
-void HistoryBackend::IncreaseSegmentDuration(const GURL& url,
-                                             base::Time time,
-                                             base::TimeDelta delta) {
-  if (!db_)
-    return;
-
-  const std::string segment_name(VisitSegmentDatabase::ComputeSegmentName(url));
-  SegmentID segment_id = db_->GetSegmentNamed(segment_name);
-  if (!segment_id) {
-    URLID url_id = db_->GetRowForURL(url, NULL);
-    if (!url_id)
-      return;
-    segment_id = db_->CreateSegment(url_id, segment_name);
-    if (!segment_id)
-      return;
-  }
-  SegmentDurationID duration_id;
-  base::TimeDelta total_delta;
-  if (!db_->GetSegmentDuration(segment_id, time, &duration_id,
-                               &total_delta)) {
-    db_->CreateSegmentDuration(segment_id, time, delta);
-    return;
-  }
-  total_delta += delta;
-  db_->SetSegmentDuration(duration_id, total_delta);
-}
-
-void HistoryBackend::QuerySegmentDuration(
-    scoped_refptr<QuerySegmentUsageRequest> request,
-    const base::Time from_time,
-    int max_result_count) {
-  if (request->canceled())
-    return;
-
-  if (db_) {
-    db_->QuerySegmentDuration(from_time, max_result_count,
-                              &request->value.get());
-  }
-  request->ForwardResult(request->handle(), &request->value.get());
-}
-
 // Keyword visits --------------------------------------------------------------
 
 void HistoryBackend::SetKeywordSearchTermsForURL(const GURL& url,