Cleanup Tool WebUI: Add HTML content and styling with dummy JS

chrome/browser/ui/webui/cleanup_tool/cleanup_action_handler.cc

+// Copyright 2017 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/cleanup_tool/cleanup_action_handler.h"
+
+#include "base/bind.h"
+#include "base/values.h"
+
+CleanupActionHandler::CleanupActionHandler() {}
+
+CleanupActionHandler::~CleanupActionHandler() {}
+
+void CleanupActionHandler::RegisterMessages() {
+  web_ui()->RegisterMessageCallback(
+      "requestLastScanResult",
+      base::Bind(&CleanupActionHandler::HandleRequestLastScanResult,
+                 base::Unretained(this)));
+}
+
+void CleanupActionHandler::HandleRequestLastScanResult(
+    const base::ListValue* args) {
+  std::string webui_callback_id;
+  CHECK_EQ(1U, args->GetSize());
+  bool success = args->GetString(0, &webui_callback_id);
+  DCHECK(success);
+
+  base::DictionaryValue last_scan_results;
+  // TODO(proberge): Return real information about the last run.
+  // TODO(proberge): Localize strings once they are finalized.
+  last_scan_results.SetBoolean("hasScanResults", false);
+  last_scan_results.SetBoolean("isInfected", false);
+  last_scan_results.SetString("detectionStatusText", "No problems detected");
+  last_scan_results.SetString("detectionTimeText", "Last scanned today");
+
+  AllowJavascript();
+  ResolveJavascriptCallback(base::Value(webui_callback_id), last_scan_results);
+}