Make ExtensionService use ExtensionSet.

chrome/browser/extensions/extension_webrequest_api.cc

Index: chrome/browser/extensions/extension_webrequest_api.cc
diff --git a/chrome/browser/extensions/extension_webrequest_api.cc b/chrome/browser/extensions/extension_webrequest_api.cc
index 3c6bcca149284a3492d74a56065ffcf49aa3e422..b621c6b99c22dc628d6053a8627344ff12d27499 100644
--- a/chrome/browser/extensions/extension_webrequest_api.cc
+++ b/chrome/browser/extensions/extension_webrequest_api.cc
@@ -1652,9 +1652,9 @@ void SendExtensionWebRequestStatusToHost(content::RenderProcessHost* host) {
   bool adblock = false;
   bool adblock_plus = false;
   bool other = false;
-  const ExtensionList* extensions =
+  const ExtensionSet* extensions =
       profile->GetExtensionService()->extensions();
-  for (ExtensionList::const_iterator it = extensions->begin();
+  for (ExtensionSet::const_iterator it = extensions->begin();
        it != extensions->end(); ++it) {
     if (profile->GetExtensionService()->HasUsedWebRequest(*it)) {
       if ((*it)->name().find("Adblock Plus") != std::string::npos) {