Add the HasAreaOpen method to DomStorageHost. Intended for use to make event propagation less chatt…

webkit/dom_storage/dom_storage_host.cc

 // Copyright (c) 2012 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 "webkit/dom_storage/dom_storage_host.h"
 
 #include "googleurl/src/gurl.h"
 #include "webkit/dom_storage/dom_storage_area.h"
 #include "webkit/dom_storage/dom_storage_context.h"
 #include "webkit/dom_storage/dom_storage_namespace.h"
@@ skipping 97 matching lines @@
 bool DomStorageHost::ClearArea(int connection_id, const GURL& page_url) {
   DomStorageArea* area = GetOpenArea(connection_id);
   if (!area)
     return false;
   if (!area->Clear())
     return false;
   context_->NotifyAreaCleared(area, page_url);
   return true;
 }
 
+bool DomStorageHost::HasAreaOpen(
+    int namespace_id, const GURL& origin) const {
+  AreaMap::const_iterator it = connections_.begin();
+  for (; it != connections_.end(); ++it) {
+    if (namespace_id == it->second.namespace_->namespace_id() &&
+        origin == it->second.area_->origin()) {
+      return true;
+    }
+  }
+  return false;
+}
+
 DomStorageArea* DomStorageHost::GetOpenArea(int connection_id) {
   AreaMap::iterator found = connections_.find(connection_id);
   if (found == connections_.end())
     return NULL;
   return found->second.area_;
 }
 
 // NamespaceAndArea
 
 DomStorageHost::NamespaceAndArea::NamespaceAndArea() {}
 DomStorageHost::NamespaceAndArea::~NamespaceAndArea() {}
 
 }  // namespace dom_storage