Make sure that a given app/extension requests only its own resources.

chrome/browser/extensions/api/serial/serial_connection.cc

 // Copyright (c) 2012 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 "chrome/browser/extensions/api/serial/serial_connection.h"
 
 #include <string>
 
 #include "base/file_path.h"
 #include "base/string_util.h"
 
 namespace extensions {
 
 const char kSerialConnectionNotFoundError[] = "Serial connection not found";
 
 SerialConnection::SerialConnection(const std::string& port,
                                    int bitrate,
+                                   const std::string& owner_extension_id,
                                    ApiResourceEventNotifier* event_notifier)
-    : ApiResource(event_notifier),
+    : ApiResource(owner_extension_id, event_notifier),
       port_(port),
       bitrate_(bitrate),
       file_(base::kInvalidPlatformFileValue) {
   CHECK(bitrate >= 0);
 }
 
 SerialConnection::~SerialConnection() {
   Close();
 }
 
@@ skipping 37 matching lines @@
   DCHECK(byte_count >= 0);
   return base::WritePlatformFileAtCurrentPos(file_,
                                              io_buffer->data(), byte_count);
 }
 
 void SerialConnection::Flush() {
   base::FlushPlatformFile(file_);
 }
 
 }  // namespace extensions