Persist download interrupt reason, both target and current paths, and url_chain.

chrome/browser/history/history_database.cc

Index: chrome/browser/history/history_database.cc
diff --git a/chrome/browser/history/history_database.cc b/chrome/browser/history/history_database.cc
index 348683a2bcc2dbaeaf0ec1add1bdf1dd3cc76a06..5a7737715baaf978095b60c6f937072173c4cc99 100644
--- a/chrome/browser/history/history_database.cc
+++ b/chrome/browser/history/history_database.cc
@@ -26,7 +26,7 @@ namespace {
 // Current version number. We write databases at the "current" version number,
 // but any previous version that can read the "compatible" one can make do with
 // or database without *too* many bad effects.
-static const int kCurrentVersionNumber = 23;
+static const int kCurrentVersionNumber = 24;
 static const int kCompatibleVersionNumber = 16;
 static const char kEarlyExpirationThresholdKey[] = "early_expiration_threshold";
 
@@ -342,6 +342,16 @@ sql::InitStatus HistoryDatabase::EnsureCurrentVersion() {
     meta_table_.SetVersionNumber(cur_version);
   }
 
+  if (cur_version == 23) {
+    if (!MigrateDownloadsReasonAndPaths()) {
+      LOG(WARNING) << "Unable to upgrade download interrupt reason and paths";
+      // Invalid state values may cause crashes.
+      return sql::INIT_FAILURE;
+    }
+    cur_version++;
+    meta_table_.SetVersionNumber(cur_version);
+  }
+
   // When the version is too old, we just try to continue anyway, there should
   // not be a released product that makes a database too old for us to handle.
   LOG_IF(WARNING, cur_version < GetCurrentVersion()) <<