Removing instances of profile_->GetBookmarkModel() as part of converting BookmarkModel to a PKS.

chrome/browser/bookmarks/bookmark_expanded_state_tracker.cc

Index: chrome/browser/bookmarks/bookmark_expanded_state_tracker.cc
===================================================================
--- chrome/browser/bookmarks/bookmark_expanded_state_tracker.cc	(revision 149452)
+++ chrome/browser/bookmarks/bookmark_expanded_state_tracker.cc	(working copy)
@@ -7,6 +7,7 @@
 #include "base/string_number_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/bookmarks/bookmark_model.h"
+#include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 
@@ -29,7 +30,7 @@
 BookmarkExpandedStateTracker::Nodes
 BookmarkExpandedStateTracker::GetExpandedNodes() {
   Nodes nodes;
-  BookmarkModel* model = profile_->GetBookmarkModel();
+  BookmarkModel* model = BookmarkModelFactory::GetForProfile(profile_);
   if (!model->IsLoaded())
     return nodes;