Refactoring: de-couple Extensions from "script injection System" [render side]:4

extensions/common/extension_set.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "extensions/common/extension_set.h"
 
 #include "base/callback.h"
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "extensions/common/constants.h"
 #include "extensions/common/extension.h"
+#include "extensions/common/host_id.h"
 #include "extensions/common/manifest_handlers/sandboxed_page_info.h"
 
 namespace extensions {
 
 ExtensionSet::const_iterator::const_iterator() {}
 
 ExtensionSet::const_iterator::const_iterator(const const_iterator& other)
     : it_(other.it_) {
 }
 
@@ skipping 109 matching lines @@
 
 ExtensionIdSet ExtensionSet::GetIDs() const {
   ExtensionIdSet ids;
   for (ExtensionMap::const_iterator it = extensions_.begin();
        it != extensions_.end(); ++it) {
     ids.insert(it->first);
   }
   return ids;
 }
 
+std::set<HostID> ExtensionSet::GetHostIDs() const {
+  std::set<HostID> ids;
+  for (ExtensionMap::const_iterator it = extensions_.begin();
+       it != extensions_.end(); ++it) {
+    ids.insert(HostID(HostID::EXTENSIONS, it->first));
+  }
+  return ids;
+}
 bool ExtensionSet::ExtensionBindingsAllowed(const GURL& url) const {
   if (url.SchemeIs(kExtensionScheme))
     return true;
 
   for (ExtensionMap::const_iterator it = extensions_.begin();
        it != extensions_.end(); ++it) {
     if (it->second->location() == Manifest::COMPONENT &&
         it->second->web_extent().MatchesURL(url))
       return true;
   }
 
   return false;
 }
 
 }  // namespace extensions