Make ExtensionService use ExtensionSet.

chrome/browser/ui/gtk/location_bar_view_gtk.cc

Index: chrome/browser/ui/gtk/location_bar_view_gtk.cc
diff --git a/chrome/browser/ui/gtk/location_bar_view_gtk.cc b/chrome/browser/ui/gtk/location_bar_view_gtk.cc
index 30a04f96d7e86a6bc11951db119736f475b33965..83407dee99186d8091f73190f71619c5c002adae 100644
--- a/chrome/browser/ui/gtk/location_bar_view_gtk.cc
+++ b/chrome/browser/ui/gtk/location_bar_view_gtk.cc
@@ -642,9 +642,10 @@ void LocationBarViewGtk::UpdatePageActions() {
     return;
 
   // Find all the page actions.
-  for (size_t i = 0; i < service->extensions()->size(); ++i) {
-    if (service->extensions()->at(i)->page_action())
-      page_actions.push_back(service->extensions()->at(i)->page_action());
+  for (ExtensionSet::const_iterator it = service->extensions()->begin();
+       it != service->extensions()->end(); ++it) {
+    if ((*it)->page_action())
+      page_actions.push_back((*it)->page_action());
   }
 
   // Initialize on the first call, or re-inialize if more extensions have been