Experimental USB API implementation.

chrome/renderer/extensions/experimental.usb_custom_bindings.cc

Index: chrome/renderer/extensions/experimental.usb_custom_bindings.cc
diff --git a/chrome/renderer/extensions/experimental.usb_custom_bindings.cc b/chrome/renderer/extensions/experimental.usb_custom_bindings.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a188f0606fdcb9ce1dd2814c4d3b57c59f5fa7bf
--- /dev/null
+++ b/chrome/renderer/extensions/experimental.usb_custom_bindings.cc
@@ -0,0 +1,26 @@
+// 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/renderer/extensions/experimental.usb_custom_bindings.h"
+
+#include "base/logging.h"
+#include "v8/include/v8.h"
+
+namespace {
+
+v8::Handle<v8::Value> GetNextUsbEventId(const v8::Arguments &arguments) {
+  static int next_event_id = 1;
+  return v8::Integer::New(next_event_id++);
+}
+
+}  // namespace
+
+namespace extensions {
+
+ExperimentalUsbCustomBindings::ExperimentalUsbCustomBindings()
+    : ChromeV8Extension(NULL) {
+  RouteStaticFunction("GetNextUsbEventId", &GetNextUsbEventId);
+}
+
+}  // namespace extensions