Domain Reliability: Add rudimentary WebUI page.

chrome/browser/ui/webui/domain_reliability_internals_ui.cc

+// Copyright 2014 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/domain_reliability_internals_ui.h"
+
+#include "chrome/browser/domain_reliability/service_factory.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/common/url_constants.h"
+#include "components/domain_reliability/service.h"
+#include "content/public/browser/web_ui.h"
+#include "content/public/browser/web_ui_data_source.h"
+#include "grit/browser_resources.h"
+#include "grit/generated_resources.h"
+
+using domain_reliability::DomainReliabilityService;
+using domain_reliability::DomainReliabilityServiceFactory;
+
+DomainReliabilityInternalsUI::DomainReliabilityInternalsUI(
+    content::WebUI* web_ui)
+    : content::WebUIController(web_ui) {
+  content::WebUIDataSource* html_source = content::WebUIDataSource::Create(
+      chrome::kChromeUIDomainReliabilityInternalsHost);
+  html_source->SetUseJsonJSFormatV2();
+  html_source->SetJsonPath("strings.js");
+  html_source->AddResourcePath("domain_reliability_internals.css",
+      IDR_DOMAIN_RELIABILITY_INTERNALS_CSS);
+  html_source->AddResourcePath("domain_reliability_internals.js",
+      IDR_DOMAIN_RELIABILITY_INTERNALS_JS);
+  html_source->SetDefaultResource(IDR_DOMAIN_RELIABILITY_INTERNALS_HTML);
+
+  web_ui->RegisterMessageCallback("updateData",
+      base::Bind(&DomainReliabilityInternalsUI::UpdateData,
+                 base::Unretained(this)));
+
+  Profile* profile = Profile::FromWebUI(web_ui);
+  content::WebUIDataSource::Add(profile, html_source);
+}
+
+DomainReliabilityInternalsUI::~DomainReliabilityInternalsUI() {}
+
+void DomainReliabilityInternalsUI::UpdateData(
+    const base::ListValue* args) const {
+  Profile* profile = Profile::FromWebUI(web_ui());
+  DomainReliabilityServiceFactory* factory =
+      DomainReliabilityServiceFactory::GetInstance();
+  DCHECK(profile);
+  DCHECK(factory);
+
+  DomainReliabilityService* service = factory->GetForBrowserContext(profile);
+  if (!service) {
+    LOG(WARNING) << "No DomainReliabilityService!";
+    NOTREACHED();

[Bernhard Bauer, 2014/06/28 11:16:35]

If this can't happen, you don't need to deal with it in production code. DCHECK
service instead.

[Deprecated (see juliatuttle), 2014/06/30 16:58:21]

This actually can happen (I've changed the underlying model so the Service is
only created for Profiles that should have a Monitor), so I'm handling it
gracefully.

+    return;
+  }
+
+  service->GetWebUIData(base::Bind(
+      &DomainReliabilityInternalsUI::OnDataUpdated,
+      base::Unretained(this)));
+}
+
+void DomainReliabilityInternalsUI::OnDataUpdated(
+    scoped_ptr<const base::Value> data) const {
+  web_ui()->CallJavascriptFunction(
+      "domain_reliability_internals.onDataUpdated", *data);
+}