Replace HistoryQuickProvider protobuf-based caching with an SQLite-based database.

chrome/browser/visitedlink/visitedlink_master.cc

Index: chrome/browser/visitedlink/visitedlink_master.cc
===================================================================
--- chrome/browser/visitedlink/visitedlink_master.cc	(revision 151481)
+++ chrome/browser/visitedlink/visitedlink_master.cc	(working copy)
@@ -147,7 +147,7 @@
   void DisownMaster();
 
   // HistoryService::URLEnumerator
-  virtual void OnURL(const GURL& url);
+  virtual void OnURL(const history::URLRow& url_row);
   virtual void OnComplete(bool succeed);
 
  private:
@@ -953,7 +953,8 @@
   master_ = NULL;
 }
 
-void VisitedLinkMaster::TableBuilder::OnURL(const GURL& url) {
+void VisitedLinkMaster::TableBuilder::OnURL(const history::URLRow& url_row) {
+  const GURL& url((url_row.url()));
   if (!url.is_empty()) {
     fingerprints_.push_back(VisitedLinkMaster::ComputeURLFingerprint(
         url.spec().data(), url.spec().length(), salt_));