Add "kiosk_only" manifest attribute for platform apps.

chrome/common/extensions/manifest_handlers/kiosk_mode_info.h

Index: chrome/common/extensions/manifest_handlers/kiosk_mode_info.h
diff --git a/chrome/common/extensions/manifest_handlers/kiosk_mode_info.h b/chrome/common/extensions/manifest_handlers/kiosk_mode_info.h
new file mode 100644
index 0000000000000000000000000000000000000000..590c03b87c35d1686a2030f04739466606e39d28
--- /dev/null
+++ b/chrome/common/extensions/manifest_handlers/kiosk_mode_info.h
@@ -0,0 +1,55 @@
+// Copyright (c) 2013 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.
+
+#ifndef CHROME_COMMON_EXTENSIONS_MANIFEST_HANDLERS_KIOSK_MODE_INFO_H_
+#define CHROME_COMMON_EXTENSIONS_MANIFEST_HANDLERS_KIOSK_MODE_INFO_H_
+
+#include <string>
+#include <vector>
+
+#include "chrome/common/extensions/extension.h"
+#include "chrome/common/extensions/manifest_handler.h"
+#include "extensions/common/manifest.h"
+
+namespace extensions {
+
+struct KioskModeInfo : public Extension::ManifestData {
+ public:
+  enum KioskStatus {
+    NONE,
+    ENABLED,
+    ONLY
+  };
+
+  explicit KioskModeInfo(KioskStatus kiosk_status);
+  virtual ~KioskModeInfo();
+
+  KioskStatus kiosk_status;
+
+  // Whether the extension or app is enabled for app kiosk mode.
+  static bool IsKioskEnabled(const Extension* extension);
+
+  // Whether the extension or app should only be available in kiosk mode.
+  static bool IsKioskOnly(const Extension* extension);
+};
+
+// Parses the "kiosk_enabled" and "kiosk_only" manifest keys.
+class KioskModeHandler : public ManifestHandler {
+ public:
+  KioskModeHandler();
+  virtual ~KioskModeHandler();
+
+  virtual bool Parse(Extension* extension, string16* error) OVERRIDE;
+
+ private:
+  virtual const std::vector<std::string> Keys() const OVERRIDE;
+
+  std::vector<std::string> supported_keys_;
+
+  DISALLOW_COPY_AND_ASSIGN(KioskModeHandler);
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_COMMON_EXTENSIONS_MANIFEST_HANDLERS_KIOSK_MODE_INFO_H_