Flesh out the location-page class to make it more general.

chrome/browser/ui/webui/settings/content_settings_handler.cc

+// Copyright (c) 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/ui/webui/settings/content_settings_handler.h"
+
+#include "base/bind.h"
+#include "components/content_settings/core/common/content_settings_types.h"
+#include "content/public/browser/web_ui.h"
+
+namespace settings {
+
+ContentSettingsHandler::ContentSettingsHandler() {
+}
+
+ContentSettingsHandler::~ContentSettingsHandler() {
+}
+
+void ContentSettingsHandler::RegisterMessages() {
+  web_ui()->RegisterMessageCallback(
+      "fetchContentSettingsData",
+      base::Bind(&ContentSettingsHandler::HandleFetchData,
+                 base::Unretained(this)));
+  web_ui()->RegisterMessageCallback(
+      "toggleChanged",
+      base::Bind(&ContentSettingsHandler::HandleToggleChange,
+                 base::Unretained(this)));
+}
+
+void ContentSettingsHandler::HandleFetchData(
+    const base::ListValue* args) {
+  CHECK_EQ(1U, args->GetSize());
+  int content_settings_type = -1;
+  CHECK(args->GetInteger(0, &content_settings_type));
+
+  base::ListValue allowedList;
+  base::ListValue blockedList;
+
+  // Return dummy data.
+  switch (content_settings_type) {
+    default: {
+      scoped_ptr<base::DictionaryValue> entry(new base::DictionaryValue());
+      entry->SetString("url", "http://foo.com");
+      allowedList.Append(entry.release());
+
+      scoped_ptr<base::DictionaryValue> entry2(new base::DictionaryValue());
+      entry2->SetString("url", "http://bar.com");
+      blockedList.Append(entry2.release());
+      break;
+    }
+    case CONTENT_SETTINGS_TYPE_GEOLOCATION: {
+      scoped_ptr<base::DictionaryValue> entry(new base::DictionaryValue());
+      entry->SetString("url", "http://foo.com");
+      allowedList.Append(entry.release());
+      break;
+    }
+  }
+
+  web_ui()->CallJavascriptFunction(
+      "Settings.receiveData", allowedList, blockedList,
+      base::FundamentalValue(true));
+}
+
+void ContentSettingsHandler::HandleToggleChange(const base::ListValue* args) {
+  CHECK_EQ(2U, args->GetSize());
+  int content_settings_type = -1;
+  CHECK(args->GetInteger(0, &content_settings_type));
+  bool enabled = false;
+  CHECK(args->GetBoolean(1, &enabled));
+
+  // TODO(finnur): Implement.
+}
+
+}  // namespace settings