Move IndexedDBKey, IndexedDBKeyRange into content namespace

content/utility/utility_thread_impl.cc

Index: content/utility/utility_thread_impl.cc
diff --git a/content/utility/utility_thread_impl.cc b/content/utility/utility_thread_impl.cc
index a4b5ed1f0f2b2565bea3394bd73e431fa67cee1a..421d24a67d539b8917a3c4d96ef6bcd3feac7fad 100644
--- a/content/utility/utility_thread_impl.cc
+++ b/content/utility/utility_thread_impl.cc
@@ -101,14 +101,14 @@ void UtilityThreadImpl::OnIDBKeysFromValuesAndKeyPath(
   std::vector<WebKit::WebIDBKey> web_keys;
   webkit_glue::IDBKeysFromValuesAndKeyPath(
       web_values, idb_key_path, &web_keys);
-  std::vector<IndexedDBKey> keys;
+  std::vector<content::IndexedDBKey> keys;
   ConvertVector(web_keys, &keys);
   Send(new UtilityHostMsg_IDBKeysFromValuesAndKeyPath_Succeeded(id, keys));
   ReleaseProcessIfNeeded();
 }
 
 void UtilityThreadImpl::OnInjectIDBKey(
-    const IndexedDBKey& key,
+    const content::IndexedDBKey& key,
     const content::SerializedScriptValue& value,
     const content::IndexedDBKeyPath& key_path) {
   content::SerializedScriptValue new_value(