bluetooth: Add device list retrieval for chrome://bluetooth-internals

chrome/browser/ui/webui/bluetooth_internals/bluetooth_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/bluetooth_internals/bluetooth_internals_ui.h"
 
+#include <utility>
+
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/grit/browser_resources.h"
 #include "content/public/browser/web_ui_data_source.h"
 
 BluetoothInternalsUI::BluetoothInternalsUI(content::WebUI* web_ui)
-    : content::WebUIController(web_ui) {
+    : MojoWebUIController(web_ui) {
   // Set up the chrome://bluetooth-internals source.
   content::WebUIDataSource* html_source =
       content::WebUIDataSource::Create(chrome::kChromeUIBluetoothInternalsHost);
 
   // Add required resources.
   html_source->AddResourcePath("bluetooth_internals.css",
                                IDR_BLUETOOTH_INTERNALS_CSS);
   html_source->AddResourcePath("bluetooth_internals.js",
                                IDR_BLUETOOTH_INTERNALS_JS);
+  html_source->AddResourcePath(
+      "chrome/browser/ui/webui/bluetooth_internals/bluetooth_internals.mojom",
+      IDR_BLUETOOTH_INTERNALS_MOJO_JS);
+  html_source->AddResourcePath(
+      "device/bluetooth/public/interfaces/bluetooth.mojom",
+      IDR_BLUETOOTH_MOJO_JS);
   html_source->SetDefaultResource(IDR_BLUETOOTH_INTERNALS_HTML);
 
   Profile* profile = Profile::FromWebUI(web_ui);
   content::WebUIDataSource::Add(profile, html_source);
 }
 
 BluetoothInternalsUI::~BluetoothInternalsUI() {}
+
+void BluetoothInternalsUI::BindUIHandler(
+    mojom::InternalsPageHandlerRequest request) {
+  page_handler_.reset(new BluetoothInternalsPageHandler(std::move(request)));

[ortuno, 2016/09/22 08:32:53]

I'm probably missing some context here but why not just bind Adapter directly
here? The extra layer of indirection seems unnecessary.

Somewhat related: You probably talked to Ken about this before but is there a
global registry that we will eventually use for the Adapter interface? I know
registries are going away but I'm not sure what's replacing them.

[mbrunson, 2016/09/24 01:05:47]

This seems to be the established pattern but the WebUIController and the
WebUIHandler can definitely be merged. I will do that.

+}