Add SetFileSize() IPC for WebSQL.

content/child/database_util.cc

 // Copyright (c) 2011 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/database_util.h"
 
 #include "content/common/database_messages.h"
 #include "ipc/ipc_sync_message_filter.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/sqlite/sqlite3.h"
@@ skipping 49 matching lines @@
 long long DatabaseUtil::DatabaseGetSpaceAvailable(
     const WebString& origin_identifier,
     IPC::SyncMessageFilter* sync_message_filter) {
   int64 rv = 0LL;
   scoped_refptr<IPC::SyncMessageFilter> filter(sync_message_filter);
   filter->Send(new DatabaseHostMsg_GetSpaceAvailable(origin_identifier.utf8(),
                                                      &rv));
   return rv;
 }
 
+bool DatabaseUtil::DatabaseSetFileSize(
+    const WebString& vfs_file_name,
+    int64 size,
+    IPC::SyncMessageFilter* sync_message_filter) {
+  bool rv = false;
+  scoped_refptr<IPC::SyncMessageFilter> filter(sync_message_filter);

[jam, 2015/04/03 15:14:23]

why is this local ref taken? i.e. why isn't the reference held by whoever is
calling this method sufficient?

[Scott Hess - ex-Googler, 2015/04/03 17:16:36]

I can't see why any of the refs in this file are necessary.

+  filter->Send(new DatabaseHostMsg_SetFileSize(vfs_file_name, size, &rv));
+  return rv;
+}
+
 }  // namespace content