Move IndexedDBKey, IndexedDBKeyRange into content namespace

content/utility/utility_thread_impl.h

Index: content/utility/utility_thread_impl.h
diff --git a/content/utility/utility_thread_impl.h b/content/utility/utility_thread_impl.h
index eba5add013d229e254e4613c1e58fc2746cf81dd..3ab88636713a5ee5429ac9add57fed088c87e7fc 100644
--- a/content/utility/utility_thread_impl.h
+++ b/content/utility/utility_thread_impl.h
@@ -16,9 +16,9 @@
 #include "content/public/utility/utility_thread.h"
 
 class FilePath;
-class IndexedDBKey;
 
 namespace content {
+class IndexedDBKey;
 class IndexedDBKeyPath;
 class SerializedScriptValue;
 class WebKitPlatformSupportImpl;
@@ -48,7 +48,7 @@ class UtilityThreadImpl : public content::UtilityThread,
       const std::vector<content::SerializedScriptValue>&
           serialized_script_values,
       const content::IndexedDBKeyPath& idb_key_path);
-  void OnInjectIDBKey(const IndexedDBKey& key,
+  void OnInjectIDBKey(const content::IndexedDBKey& key,
                       const content::SerializedScriptValue& value,
                       const content::IndexedDBKeyPath& key_path);
   void OnBatchModeStarted();