IndexedDB: Reset prefetch caches on IDBObjectStore.clear()

content/child/indexed_db/indexed_db_dispatcher.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 "content/child/indexed_db/indexed_db_dispatcher.h"
 
 #include "base/format_macros.h"
 #include "base/lazy_instance.h"
 #include "base/strings/stringprintf.h"
 #include "base/threading/thread_local.h"
@@ skipping 411 matching lines @@
   params.object_store_id = object_store_id;
   params.key_range = key_range;
   Send(new IndexedDBHostMsg_DatabaseDeleteRange(params));
 }
 
 void IndexedDBDispatcher::RequestIDBDatabaseClear(
     int32 ipc_database_id,
     int64 transaction_id,
     int64 object_store_id,
     WebIDBCallbacks* callbacks_ptr) {
+  ResetCursorPrefetchCaches();
   scoped_ptr<WebIDBCallbacks> callbacks(callbacks_ptr);
   int32 ipc_callbacks_id = pending_callbacks_.Add(callbacks.release());
   Send(new IndexedDBHostMsg_DatabaseClear(CurrentWorkerId(),
                                           ipc_callbacks_id,
                                           ipc_database_id,
                                           transaction_id,
                                           object_store_id));
 }
 
 void IndexedDBDispatcher::CursorDestroyed(int32 ipc_cursor_id) {
@@ skipping 277 matching lines @@
     int32 ipc_exception_cursor_id) {
   typedef std::map<int32, WebIDBCursorImpl*>::iterator Iterator;
   for (Iterator i = cursors_.begin(); i != cursors_.end(); ++i) {
     if (i->first == ipc_exception_cursor_id)
       continue;
     i->second->ResetPrefetchCache();
   }
 }
 
 }  // namespace content