Add chrome://usb-internals page for adding and removing test devices.

chrome/browser/ui/webui/usb_internals/usb_internals_ui.cc

+// 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.
+
+#include "chrome/browser/ui/webui/usb_internals/usb_internals_ui.h"
+
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/webui/usb_internals/usb_internals_page_handler.h"
+#include "chrome/common/url_constants.h"
+#include "chrome/grit/browser_resources.h"
+#include "content/public/browser/web_ui_data_source.h"
+
+UsbInternalsUI::UsbInternalsUI(content::WebUI* web_ui)
+    : MojoWebUIController(web_ui) {
+  // Set up the chrome://usb-internals source.
+  content::WebUIDataSource* source =
+      content::WebUIDataSource::Create(chrome::kChromeUIUsbInternalsHost);
+  source->AddResourcePath("usb_internals.css", IDR_USB_INTERNALS_CSS);
+  source->AddResourcePath("usb_internals.js", IDR_USB_INTERNALS_JS);
+  source->AddResourcePath(
+      "chrome/browser/ui/webui/usb_internals/usb_internals.mojom",
+      IDR_USB_INTERNALS_MOJO_JS);
+  source->SetDefaultResource(IDR_USB_INTERNALS_HTML);
+
+  content::WebUIDataSource::Add(Profile::FromWebUI(web_ui), source);
+}
+
+UsbInternalsUI::~UsbInternalsUI() {}
+
+void UsbInternalsUI::BindUIHandler(
+    mojom::UsbInternalsPageHandlerRequest request) {
+  page_handler_.reset(new UsbInternalsPageHandler(std::move(request)));
+}