Port messages sent by WebIDBCursorImpl to Mojo.

content/common/indexed_db/indexed_db.mojom

 // Copyright 2016 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.
 
 // TODO: This will move to //third_party/WebKit when //content/child/indexed_db
 // is deleted but for now this will depend on //content/common types and so
 // so belongs here.
 
 module indexed_db.mojom;
 
@@ skipping 93 matching lines @@
   // Factory::Open / DeleteDatabase
   Blocked(int64 existing_version);
 
   // Factory::Open
   UpgradeNeeded(associated Database database, int64 old_version,
                 DataLoss data_loss, string data_loss_message,
                 DatabaseMetadata db_metadata);
   SuccessDatabase(associated Database? database, DatabaseMetadata metadata);
 
   // Database::OpenCursor
-  SuccessCursor(int32 cursor_id, Key key, Key primary_key, Value? value);
+  SuccessCursor(associated Cursor cursor,
+                Key key,
+                Key primary_key,
+                Value? value);
 
   // Database::Get / Cursor::Advance
   SuccessValue(ReturnValue? value);
 
+  // Cursor::Continue / Advance
+  SuccessCursorContinue(Key key, Key primary_key, Value? value);
+
+  // Cursor::Prefetch
+  SuccessCursorPrefetch(array<Key> keys,
+                        array<Key> primary_keys,
+                        array<Value> values);
+
   // Database::GetAll
   SuccessArray(array<ReturnValue> values);
 
   // Database::Put / Cursor::Update
   SuccessKey(Key key);
 
   // Database::Count / DeleteRange
   // Factory::DeleteDatabase
   SuccessInteger(int64 value);
 
   // Cursor::Continue / Advance
   Success();
 };
 
 // The DatabaseCallbacks interface is used to notification of events out of
 // band to individual requests. A single instance is used for the lifetime of
 // a database connection.
 interface DatabaseCallbacks {
   ForcedClose();
   VersionChange(int64 old_version, int64 new_version);
   Abort(int64 transaction_id, int32 code,
         mojo.common.mojom.String16 message);
   Complete(int64 transaction_id);
 };
 
+interface Cursor {
+  Advance(uint32 count, associated Callbacks callbacks);
+  Continue(Key key, Key primary_key, associated Callbacks callbacks);
+  Prefetch(int32 count, associated Callbacks callbacks);
+  PrefetchReset(int32 used_prefetches, int32 unused_prefetches,
+                array<string> unused_blob_uuids);
+};
+
 interface Database {
   CreateObjectStore(int64 transaction_id,
                     int64 object_store_id,
                     mojo.common.mojom.String16 name,
                     KeyPath key_path,
                     bool auto_increment);
   DeleteObjectStore(int64 transaction_id,
                     int64 object_store_id);
   RenameObjectStore(int64 transaction_id,
                     int64 object_store_id,
@@ skipping 77 matching lines @@
 };
 
 interface Factory {
   GetDatabaseNames(associated Callbacks callbacks, url.mojom.Origin origin);
   Open(int32 worker_thread, associated Callbacks callbacks,
        associated DatabaseCallbacks database_callbacks, url.mojom.Origin origin,
        mojo.common.mojom.String16 name, int64 version, int64 transaction_id);
   DeleteDatabase(associated Callbacks callbacks, url.mojom.Origin origin,
                  mojo.common.mojom.String16 name);
 };