IndexedDB: Remove uses of WebKit API types from back-end code

content/browser/indexed_db/indexed_db_callbacks.h

Index: content/browser/indexed_db/indexed_db_callbacks.h
diff --git a/content/browser/indexed_db/indexed_db_callbacks.h b/content/browser/indexed_db/indexed_db_callbacks.h
index aed45612f855e2bbefdcd64c2cae4ef201c60ae6..948d32c67a1d7501f360160c3bbd08e0fcdd91c1 100644
--- a/content/browser/indexed_db/indexed_db_callbacks.h
+++ b/content/browser/indexed_db/indexed_db_callbacks.h
@@ -11,10 +11,9 @@
 #include "googleurl/src/gurl.h"
 #include "third_party/WebKit/public/platform/WebIDBCallbacks.h"
 #include "third_party/WebKit/public/platform/WebIDBDatabase.h"
-#include "third_party/WebKit/public/platform/WebIDBDatabaseError.h"
-#include "third_party/WebKit/public/platform/WebString.h"
 
 namespace content {
+class IndexedDBDatabaseError;
 class WebIDBCursorImpl;
 class WebIDBDatabaseImpl;
 struct IndexedDBDatabaseMetadata;
@@ -23,7 +22,7 @@ class IndexedDBCallbacksBase {
  public:
   virtual ~IndexedDBCallbacksBase();
 
-  virtual void onError(const WebKit::WebIDBDatabaseError& error);
+  virtual void onError(const IndexedDBDatabaseError& error);
   virtual void onBlocked(long long old_version);
 
   // implemented by subclasses, but need to be called later