Add the ability to unload the HistoryBackend.

A small number of places used accessors like in_memory_url_database() or backend_loaded() with the expectation that if they weren't already functional, the history system was in the process of making them so.  I elected to make both of these functions that triggered lazy backend initialization.

BUG=23400
TEST=none
Review URL: http://codereview.chromium.org/267019

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@28461 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 3 insertions, 3 deletions

diff --git a/chrome/browser/bookmarks/bookmark_index.cc b/chrome/browser/bookmarks/bookmark_index.cc
index 8245ac1..18c3134 100644
--- a/chrome/browser/bookmarks/bookmark_index.cc
+++ b/chrome/browser/bookmarks/bookmark_index.cc
@@ -80,7 +80,7 @@ void BookmarkIndex::SortMatches(const Matches& matches,
       profile_->GetHistoryService(Profile::EXPLICIT_ACCESS) : NULL;
 
   history::URLDatabase* url_db = history_service ?
-      history_service->in_memory_database() : NULL;
+      history_service->InMemoryDatabase() : NULL;
 
   for (Matches::const_iterator i = matches.begin(); i != matches.end(); ++i)
     ExtractBookmarkNodePairs(url_db, *i, node_typed_counts);
diff --git a/chrome/browser/bookmarks/bookmark_index_unittest.cc b/chrome/browser/bookmarks/bookmark_index_unittest.cc
index edac8b0..102a734 100644
--- a/chrome/browser/bookmarks/bookmark_index_unittest.cc
+++ b/chrome/browser/bookmarks/bookmark_index_unittest.cc
@@ -224,7 +224,7 @@ TEST_F(BookmarkIndexTest, GetResultsSortedByTypedCount) {
   HistoryService* const history_service =
       profile.GetHistoryService(Profile::EXPLICIT_ACCESS);
 
-  history::URLDatabase* url_db = history_service->in_memory_database();
+  history::URLDatabase* url_db = history_service->InMemoryDatabase();
 
   struct TestData {
     const GURL url;
diff --git a/chrome/browser/bookmarks/bookmark_storage.cc b/chrome/browser/bookmarks/bookmark_storage.cc
index d7dbe19..a187921 100644
--- a/chrome/browser/bookmarks/bookmark_storage.cc
+++ b/chrome/browser/bookmarks/bookmark_storage.cc
@@ -177,7 +177,7 @@ void BookmarkStorage::MigrateFromHistory() {
       model_->DoneLoading(details_.release());
     return;
   }
-  if (!history->backend_loaded()) {
+  if (!history->BackendLoaded()) {
     // The backend isn't finished loading. Wait for it.
     notification_registrar_.Add(this, NotificationType::HISTORY_LOADED,
                                 Source<Profile>(profile_));