Make ExtensionService use ExtensionSet.

chrome/browser/extensions/extension_process_manager.cc

Index: chrome/browser/extensions/extension_process_manager.cc
diff --git a/chrome/browser/extensions/extension_process_manager.cc b/chrome/browser/extensions/extension_process_manager.cc
index c807206fdf301b28fb3ce2ab0d46bcb697dfbac0..5316516f8c7ced7343e87fcfd44ab0724db93c06 100644
--- a/chrome/browser/extensions/extension_process_manager.cc
+++ b/chrome/browser/extensions/extension_process_manager.cc
@@ -74,8 +74,8 @@ static void CreateBackgroundHostForExtensionLoad(
 }
 
 static void CreateBackgroundHostsForProfileStartup(
-    ExtensionProcessManager* manager, const ExtensionList* extensions) {
-  for (ExtensionList::const_iterator extension = extensions->begin();
+    ExtensionProcessManager* manager, const ExtensionSet* extensions) {
+  for (ExtensionSet::const_iterator extension = extensions->begin();
        extension != extensions->end(); ++extension) {
     CreateBackgroundHostForExtensionLoad(manager, *extension);
   }