Add webusb notification UI code

chrome/browser/chrome_webusb_browser_client.cc

+// Copyright 2015 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/chrome_webusb_browser_client.h"
+
+#include "base/command_line.h"
+#include "chrome/browser/net/referrer.h"
+#include "chrome/browser/profiles/profile_manager.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_finder.h"
+#include "chrome/browser/ui/host_desktop.h"
+#include "chrome/common/chrome_switches.h"
+#include "ui/base/page_transition_types.h"
+#include "ui/base/window_open_disposition.h"
+#include "url/gurl.h"
+
+ChromeWebUsbBrowserClient::ChromeWebUsbBrowserClient() {}
+
+ChromeWebUsbBrowserClient::~ChromeWebUsbBrowserClient() {}
+
+void ChromeWebUsbBrowserClient::OpenURL(const GURL& url) {
+  Browser* browser = chrome::FindBrowserWithProfile(
+      ProfileManager::GetActiveUserProfile(), chrome::HOST_DESKTOP_TYPE_NATIVE);
+  content::OpenURLParams params(url, content::Referrer(), NEW_FOREGROUND_TAB,
+                                ui::PAGE_TRANSITION_AUTO_TOPLEVEL, true);
+  browser->OpenURL(params);
+}
+
+bool ChromeWebUsbBrowserClient::WebUsbNotificationEnabled() {
+  return base::CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kEnableWebUsbNotification);
+}