IndexedDB: Cursor pre-fetching.

content/common/indexed_db_messages.h

Index: content/common/indexed_db_messages.h
diff --git a/content/common/indexed_db_messages.h b/content/common/indexed_db_messages.h
index 118106ecb84cd26cbb5c8e49aecd87ccb19421dd..31a09740e59ba428a689e0aec4f3c9a7c754d646 100644
--- a/content/common/indexed_db_messages.h
+++ b/content/common/indexed_db_messages.h
@@ -147,6 +147,12 @@ IPC_MESSAGE_CONTROL5(IndexedDBMsg_CallbacksSuccessCursorContinue,
                      IndexedDBKey /* key */,
                      IndexedDBKey /* primary key */,
                      content::SerializedScriptValue /* script_value */)
+IPC_MESSAGE_CONTROL5(IndexedDBMsg_CallbacksSuccessCursorPrefetch,
+                     int32 /* response_id */,
+                     int32 /* cursor_id */,
+                     std::vector<IndexedDBKey> /* keys */,
+                     std::vector<IndexedDBKey> /* primary keys */,
+                     std::vector<content::SerializedScriptValue> /* values */)
 IPC_MESSAGE_CONTROL2(IndexedDBMsg_CallbacksSuccessIDBDatabase,
                      int32 /* response_id */,
                      int32 /* idb_database_id */)
@@ -200,6 +206,19 @@ IPC_SYNC_MESSAGE_CONTROL3_1(IndexedDBHostMsg_CursorContinue,
                      IndexedDBKey, /* key */
                      WebKit::WebExceptionCode /* ec */)
 
+// WebIDBCursor::prefetchContinue() message.
+IPC_SYNC_MESSAGE_CONTROL3_1(IndexedDBHostMsg_CursorPrefetch,
+                     int32, /* idb_cursor_id */
+                     int32, /* response_id */
+                     int32, /* n */
+                     WebKit::WebExceptionCode /* ec */)
+
+// WebIDBCursor::prefetchReset() message.
+IPC_SYNC_MESSAGE_CONTROL3_0(IndexedDBHostMsg_CursorPrefetchReset,
+                     int32, /* idb_cursor_id */
+                     int32, /* used_prefetches */
+                     int32  /* used_prefetches */)
+
 // WebIDBCursor::remove() message.
 IPC_SYNC_MESSAGE_CONTROL2_1(IndexedDBHostMsg_CursorDelete,
                      int32, /* idb_cursor_id */