Implement kiosk multiple apps feature.

extensions/common/manifest_handlers/kiosk_secondary_apps_info.h

+// Copyright 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.
+
+#ifndef EXTENSIONS_COMMON_MANIFEST_HANDLERS_KIOSK_SECONDARY_APPS_INFO_H_
+#define EXTENSIONS_COMMON_MANIFEST_HANDLERS_KIOSK_SECONDARY_APPS_INFO_H_
+
+#include <string>
+#include <vector>
+
+#include "extensions/common/extension.h"
+#include "extensions/common/manifest.h"
+#include "extensions/common/manifest_handler.h"
+
+namespace extensions {
+
+struct KioskSecondaryAppsInfo : public Extension::ManifestData {

[not at google - send to devlin, 2015/08/31 18:11:52]

Should this all be in the KioskModeInfo manifest handler? Having a single place
for handling kiosk mode configuration would be nice, and KioskModeInfo is
already a bundle of a couple of manifest keys.

[jennyz, 2015/08/31 23:57:25]

Done.

+ public:
+  explicit KioskSecondaryAppsInfo(const std::vector<std::string>& app_ids);
+  ~KioskSecondaryAppsInfo() override;
+
+  // Returns true if there are kiosk secondary apps.
+  static bool HaveSecondaryApps(const Extension* extension);

[not at google - send to devlin, 2015/08/31 18:11:52]

// Returns true if |extension| declares secondary kiosk apps.
static bool HasSecondaryApps(...);

[jennyz, 2015/08/31 23:57:25]

Done.

+
+  // Gets the KioskSecondaryAppsInfo for |extension|, or NULL if none was
+  // specified.
+  static KioskSecondaryAppsInfo* Get(const Extension* extension);
+
+  static scoped_ptr<KioskSecondaryAppsInfo> Create(Extension* extension,
+                                                   base::string16* error);
+
+  // The IDs of the kiosk secondary apps.
+  const std::vector<std::string> ids;
+};
+
+// Parses the "kiosk_secondary_apps" key and its sub keys.
+class KioskSecondaryAppsHandler : public ManifestHandler {
+ public:
+  KioskSecondaryAppsHandler();
+  ~KioskSecondaryAppsHandler() override;
+
+  bool Parse(Extension* extension, base::string16* error) override;
+
+ private:
+  const std::vector<std::string> Keys() const override;
+
+  DISALLOW_COPY_AND_ASSIGN(KioskSecondaryAppsHandler);
+};
+
+}  // namespace extensions
+
+#endif  // EXTENSIONS_COMMON_MANIFEST_HANDLERS_KIOSK_SECONDARY_APPS_INFO_H_