This adds a webui overlay on the extensions page for showing what Extension keybindings are active.…

chrome/browser/ui/webui/extensions/extension_commands_handler.cc

+// Copyright (c) 2012 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/extensions/extension_commands_handler.h"
+
+#include "base/bind.h"
+#include "base/values.h"
+#include "chrome/browser/extensions/api/commands/extension_command_service.h"
+#include "chrome/browser/extensions/api/commands/extension_command_service_factory.h"
+#include "chrome/browser/profiles/profile.h"
+#include "content/public/browser/web_ui.h"
+#include "grit/generated_resources.h"
+#include "ui/base/l10n/l10n_util.h"
+
+ExtensionCommandsHandler::ExtensionCommandsHandler() {
+}
+
+ExtensionCommandsHandler::~ExtensionCommandsHandler() {
+}
+
+void ExtensionCommandsHandler::GetLocalizedValues(
+    DictionaryValue* localized_strings) {
+  DCHECK(localized_strings);
+  localized_strings->SetString("extensionCommandsOverlay",
+      l10n_util::GetStringUTF16(IDS_EXTENSION_COMMANDS_DIALOG_TITLE));
+  localized_strings->SetString("extensionCommandsEmpty",
+      l10n_util::GetStringUTF16(IDS_EXTENSION_COMMANDS_EMPTY));
+  localized_strings->SetString("extensionCommandsInactive",
+      l10n_util::GetStringUTF16(IDS_EXTENSION_COMMANDS_INACTIVE));
+  localized_strings->SetString("close", l10n_util::GetStringUTF16(IDS_CLOSE));
+}
+
+void ExtensionCommandsHandler::RegisterMessages() {
+  web_ui()->RegisterMessageCallback("extensionCommandsRequestExtensionsData",
+      base::Bind(&ExtensionCommandsHandler::HandleRequestExtensionsData,
+      base::Unretained(this)));
+}
+
+void ExtensionCommandsHandler::HandleRequestExtensionsData(
+    const ListValue* args) {
+  DictionaryValue results;
+
+  Profile* profile = Profile::FromWebUI(web_ui());
+  ExtensionCommandService* command_service =
+      ExtensionCommandServiceFactory::GetForProfile(profile);
+  command_service->GetAllCommands(&results);
+
+  web_ui()->CallJavascriptFunction(
+      "ExtensionCommandsOverlay.returnExtensionsData", results);
+}