Add "kiosk_only" manifest attribute for platform apps.

This top-level manifest attribute enforces that the app can only be installed and run in ChromeOS kiosk mode.

BUG=284964
TEST=added new tests

Review URL: https://codereview.chromium.org/23604068

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@225400 0039d316-1c4b-4281-b951-d872f2087c98

31 files changed, 430 insertions, 144 deletions

diff --git a/apps/DEPS b/apps/DEPS
index 25b5188..62d6854 100644
--- a/apps/DEPS
+++ b/apps/DEPS
@@ -15,6 +15,7 @@ include_rules = [
   "+chrome/browser/browser_process.h",
   "+chrome/browser/chrome_notification_types.h",
   "+chrome/browser/chromeos/drive",
+  "+chrome/browser/chromeos/login/user_manager.h",
   "+chrome/browser/lifetime/application_lifetime.h",
   "+chrome/browser/profiles",
   "+chrome/browser/sessions/session_id.h",
@@ -47,6 +48,7 @@ include_rules = [
   "+chrome/common/extensions/extension_messages.h",
   "+chrome/common/extensions/extension_set.h",
   "+chrome/common/extensions/manifest_handlers/icons_handler.h",
+  "+chrome/common/extensions/manifest_handlers/kiosk_mode_info.h",
   "+chrome/common/extensions/permissions/api_permission.h",
   "+chrome/common/extensions/permissions/permission_set.h",
 ]
diff --git a/apps/launcher.cc b/apps/launcher.cc
index aae298f..384d271 100644
--- a/apps/launcher.cc
+++ b/apps/launcher.cc
@@ -26,6 +26,7 @@
 #include "chrome/common/extensions/api/app_runtime.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_messages.h"
+#include "chrome/common/extensions/manifest_handlers/kiosk_mode_info.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/web_contents.h"
@@ -37,6 +38,7 @@
 #include "chrome/browser/chromeos/drive/file_errors.h"
 #include "chrome/browser/chromeos/drive/file_system_interface.h"
 #include "chrome/browser/chromeos/drive/file_system_util.h"
+#include "chrome/browser/chromeos/login/user_manager.h"
 #endif
 
 #if defined(OS_WIN)
@@ -313,15 +315,32 @@ void LaunchPlatformAppWithCommandLine(Profile* profile,
                                       const CommandLine* command_line,
                                       const base::FilePath& current_directory) {
 #if defined(OS_WIN)
-    // On Windows 8's single window Metro mode we can not launch platform apps.
-    // Offer to switch Chrome to desktop mode.
-    if (win8::IsSingleWindowMetroMode()) {
-      AppMetroInfoBarDelegateWin::Create(
-          profile, AppMetroInfoBarDelegateWin::LAUNCH_PACKAGED_APP,
-          extension->id());
+  // On Windows 8's single window Metro mode we can not launch platform apps.
+  // Offer to switch Chrome to desktop mode.
+  if (win8::IsSingleWindowMetroMode()) {
+    AppMetroInfoBarDelegateWin::Create(
+        profile, AppMetroInfoBarDelegateWin::LAUNCH_PACKAGED_APP,
+        extension->id());
+    return;
+  }
+#endif
+
+  // An app with "kiosk_only" should not be installed and launched
+  // outside of ChromeOS kiosk mode in the first place. This is a defensive
+  // check in case this scenario does occur.
+  if (extensions::KioskModeInfo::IsKioskOnly(extension)) {
+    bool in_kiosk_mode = false;
+#if defined(OS_CHROMEOS)
+    chromeos::UserManager* user_manager = chromeos::UserManager::Get();
+    in_kiosk_mode = user_manager && user_manager->IsLoggedInAsKioskApp();
+#endif
+    if (!in_kiosk_mode) {
+      LOG(ERROR) << "App with 'kiosk_only' attribute must be run in "
+          << " ChromeOS kiosk mode.";
+      NOTREACHED();
       return;
     }
-#endif
+  }
 
   base::FilePath path;
   if (!GetAbsolutePathFromCommandLine(command_line, current_directory, &path)) {
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index cb2983c..01cf01a 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -4445,6 +4445,9 @@ Make sure you do not expose any sensitive information.
       <message name="IDS_EXTENSION_INSTALL_DEPENDENCY_NOT_SHARED_MODULE" desc="Error displayed during installation of an extension which tries to imports resources from an extension which is not a shared module.">
         Unable to import extension with ID "<ph name="IMPORT_ID">$1<ex>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa</ex></ph>" because it is not a shared module.
       </message>
+      <message name="IDS_EXTENSION_INSTALL_KIOSK_MODE_ONLY" desc="Error displayed during installation of an app with 'kiosk_only' attribute but user is not in ChromeOS kiosk mode.">
+        App with 'kiosk_only' manifest attribute must be installed in ChromeOS kiosk mode.
+      </message>
       <message name="IDS_EXTENSION_OVERLAPPING_WEB_EXTENT" desc="Error message when a user tries to install an app with a web extent that overlaps another installed app.">
         Could not add application because it conflicts with "<ph name="APP_NAME">$1<ex>Google Mail</ex></ph>".
       </message>
diff --git a/chrome/browser/chromeos/app_mode/startup_app_launcher.cc b/chrome/browser/chromeos/app_mode/startup_app_launcher.cc
index 319e9aa..1a6444c 100644
--- a/chrome/browser/chromeos/app_mode/startup_app_launcher.cc
+++ b/chrome/browser/chromeos/app_mode/startup_app_launcher.cc
@@ -26,7 +26,7 @@
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension.h"
-#include "chrome/common/extensions/manifest_handlers/kiosk_enabled_info.h"
+#include "chrome/common/extensions/manifest_handlers/kiosk_mode_info.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_service.h"
 #include "google_apis/gaia/gaia_auth_consumer.h"
@@ -222,7 +222,7 @@ void StartupAppLauncher::LaunchApp() {
       extension_service()->GetInstalledExtension(app_id_);
   CHECK(extension);
 
-  if (!extensions::KioskEnabledInfo::IsKioskEnabled(extension)) {
+  if (!extensions::KioskModeInfo::IsKioskEnabled(extension)) {
     OnLaunchFailure(KioskAppLaunchError::NOT_KIOSK_ENABLED);
     return;
   }
diff --git a/chrome/browser/chromeos/login/fake_user_manager.cc b/chrome/browser/chromeos/login/fake_user_manager.cc
index b0a139b..007ce1a 100644
--- a/chrome/browser/chromeos/login/fake_user_manager.cc
+++ b/chrome/browser/chromeos/login/fake_user_manager.cc
@@ -30,6 +30,12 @@ void FakeUserManager::AddUser(const std::string& email) {
   user_list_.push_back(user);
 }
 
+void FakeUserManager::AddKioskAppUser(const std::string& kiosk_app_username) {
+  User* user = User::CreateKioskAppUser(kiosk_app_username);
+  user->set_username_hash(kiosk_app_username + kUserIdHashSuffix);
+  user_list_.push_back(user);
+}
+
 void FakeUserManager::LoginUser(const std::string& email) {
   UserLoggedIn(email, email + kUserIdHashSuffix, false);
 }
@@ -70,15 +76,18 @@ void FakeUserManager::UserLoggedIn(const std::string& email,
   }
 }
 
+User* FakeUserManager::GetActiveUserInternal() const {
+  if (user_list_.size())
+    return user_list_[0];
+  return NULL;
+}
+
 const User* FakeUserManager::GetActiveUser() const {
-  return GetActiveUser();
+  return GetActiveUserInternal();
 }
 
 User* FakeUserManager::GetActiveUser() {
-  // Just return the first user.
-  if (user_list_.size())
-    return user_list_[0];
-  return NULL;
+  return GetActiveUserInternal();
 }
 
 void FakeUserManager::SaveUserDisplayName(
@@ -198,7 +207,7 @@ bool FakeUserManager::CanCurrentUserLock() const {
 }
 
 bool FakeUserManager::IsUserLoggedIn() const {
-  return true;
+  return logged_in_users_.size() > 0;
 }
 
 bool FakeUserManager::IsLoggedInAsRegularUser() const {
@@ -222,7 +231,10 @@ bool FakeUserManager::IsLoggedInAsLocallyManagedUser() const {
 }
 
 bool FakeUserManager::IsLoggedInAsKioskApp() const {
-  return false;
+  const User* active_user = GetActiveUser();
+  return active_user ?
+      active_user->GetType() == User::USER_TYPE_KIOSK_APP :
+      false;
 }
 
 bool FakeUserManager::IsLoggedInAsStub() const {
diff --git a/chrome/browser/chromeos/login/fake_user_manager.h b/chrome/browser/chromeos/login/fake_user_manager.h
index a74f820..f8399a9 100644
--- a/chrome/browser/chromeos/login/fake_user_manager.h
+++ b/chrome/browser/chromeos/login/fake_user_manager.h
@@ -24,8 +24,11 @@ class FakeUserManager : public UserManager {
   // Create and add a new user.
   void AddUser(const std::string& email);
 
-  // Calculates the user name hash and calls UserLoggedIn to login a user.
-  void LoginUser(const std::string& email);
+  // Create and add a kiosk app user.
+  void AddKioskAppUser(const std::string& kiosk_app_username);
+
+   // Calculates the user name hash and calls UserLoggedIn to login a user.
+   void LoginUser(const std::string& email);
 
   // UserManager overrides.
   virtual const UserList& GetUsers() const OVERRIDE;
@@ -134,6 +137,9 @@ class FakeUserManager : public UserManager {
   }
 
  private:
+  // We use this internal function for const-correctness.
+  User* GetActiveUserInternal() const;
+
   UserList user_list_;
   UserList logged_in_users_;
   std::string owner_email_;
diff --git a/chrome/browser/extensions/api/system_display/system_display_api.cc b/chrome/browser/extensions/api/system_display/system_display_api.cc
index 36dd2f2..775a429 100644
--- a/chrome/browser/extensions/api/system_display/system_display_api.cc
+++ b/chrome/browser/extensions/api/system_display/system_display_api.cc
@@ -5,7 +5,7 @@
 #include "chrome/browser/extensions/api/system_display/system_display_api.h"
 
 #include "base/memory/scoped_ptr.h"
-#include "chrome/common/extensions/manifest_handlers/kiosk_enabled_info.h"
+#include "chrome/common/extensions/manifest_handlers/kiosk_mode_info.h"
 
 namespace extensions {
 
@@ -37,7 +37,7 @@ bool SystemDisplaySetDisplayPropertiesFunction::RunImpl() {
   SetError("Function available only on ChromeOS.");
   return false;
 #else
-  if (!KioskEnabledInfo::IsKioskEnabled(GetExtension())) {
+  if (!KioskModeInfo::IsKioskEnabled(GetExtension())) {
     SetError("The extension needs to be kiosk enabled to use the function.");
     return false;
   }
diff --git a/chrome/browser/extensions/crx_installer.cc b/chrome/browser/extensions/crx_installer.cc
index 2f793a2..2205608 100644
--- a/chrome/browser/extensions/crx_installer.cc
+++ b/chrome/browser/extensions/crx_installer.cc
@@ -38,6 +38,7 @@
 #include "chrome/common/extensions/extension_file_util.h"
 #include "chrome/common/extensions/extension_icon_set.h"
 #include "chrome/common/extensions/feature_switch.h"
+#include "chrome/common/extensions/manifest_handlers/kiosk_mode_info.h"
 #include "chrome/common/extensions/manifest_handlers/shared_module_info.h"
 #include "chrome/common/extensions/manifest_url_handler.h"
 #include "chrome/common/extensions/permissions/permission_set.h"
@@ -55,6 +56,10 @@
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 
+#if defined(OS_CHROMEOS)
+#include "chrome/browser/chromeos/login/user_manager.h"
+#endif
+
 using content::BrowserThread;
 using content::UserMetricsAction;
 using extensions::SharedModuleInfo;
@@ -512,6 +517,19 @@ void CrxInstaller::ConfirmInstall() {
   if (!service || service->browser_terminating())
     return;
 
+  if (KioskModeInfo::IsKioskOnly(installer_.extension())) {
+    bool in_kiosk_mode = false;
+#if defined(OS_CHROMEOS)
+    chromeos::UserManager* user_manager = chromeos::UserManager::Get();
+    in_kiosk_mode = user_manager && user_manager->IsLoggedInAsKioskApp();
+#endif
+    if (!in_kiosk_mode) {
+      ReportFailureFromUIThread(CrxInstallerError(
+          l10n_util::GetStringUTF16(
+              IDS_EXTENSION_INSTALL_KIOSK_MODE_ONLY)));
+    }
+  }
+
   string16 error = installer_.CheckManagementPolicy();
   if (!error.empty()) {
     // We don't want to show the error infobar for installs from the WebStore,
diff --git a/chrome/browser/extensions/crx_installer_browsertest.cc b/chrome/browser/extensions/crx_installer_browsertest.cc
index 105b4c6..a916842 100644
--- a/chrome/browser/extensions/crx_installer_browsertest.cc
+++ b/chrome/browser/extensions/crx_installer_browsertest.cc
@@ -25,6 +25,11 @@
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
+#if defined(OS_CHROMEOS)
+#include "chrome/browser/chromeos/login/fake_user_manager.h"
+#include "chrome/browser/chromeos/login/user_manager.h"
+#endif
+
 class SkBitmap;
 
 namespace extensions {
@@ -477,4 +482,20 @@ IN_PROC_BROWSER_TEST_F(ExtensionCrxInstallerTest, NonStrictManifestCheck) {
   EXPECT_TRUE(mock_prompt->did_succeed());
 }
 
+IN_PROC_BROWSER_TEST_F(ExtensionCrxInstallerTest, KioskOnlyTest) {
+  base::FilePath crx_path =
+      test_data_dir_.AppendASCII("kiosk/kiosk_only.crx");
+  EXPECT_FALSE(InstallExtension(crx_path, 0));
+#if defined(OS_CHROMEOS)
+  // Simulate ChromeOS kiosk mode. |scoped_user_manager| will take over
+  // lifetime of |user_manager|.
+  chromeos::FakeUserManager* fake_user_manager =
+      new chromeos::FakeUserManager();
+  fake_user_manager->AddKioskAppUser("example@example.com");
+  fake_user_manager->LoginUser("example@example.com");
+  chromeos::ScopedUserManagerEnabler scoped_user_manager(fake_user_manager);
+  EXPECT_TRUE(InstallExtension(crx_path, 1));
+#endif
+}
+
 }  // namespace extensions
diff --git a/chrome/browser/ui/webui/extensions/extension_basic_info.cc b/chrome/browser/ui/webui/extensions/extension_basic_info.cc
index 606ee2b..0e6b3e5 100644
--- a/chrome/browser/ui/webui/extensions/extension_basic_info.cc
+++ b/chrome/browser/ui/webui/extensions/extension_basic_info.cc
@@ -6,7 +6,7 @@
 
 #include "base/values.h"
 #include "chrome/common/extensions/extension.h"
-#include "chrome/common/extensions/manifest_handlers/kiosk_enabled_info.h"
+#include "chrome/common/extensions/manifest_handlers/kiosk_mode_info.h"
 #include "chrome/common/extensions/manifest_handlers/offline_enabled_info.h"
 #include "chrome/common/extensions/manifest_url_handler.h"
 
@@ -19,6 +19,7 @@ const char kHomepageUrlKey[] = "homepageUrl";
 const char kIdKey[] = "id";
 const char kNameKey[] = "name";
 const char kKioskEnabledKey[] = "kioskEnabled";
+const char kKioskOnlyKey[] = "kioskOnly";
 const char kOfflineEnabledKey[] = "offlineEnabled";
 const char kOptionsUrlKey[] = "optionsUrl";
 const char kDetailsUrlKey[] = "detailsUrl";
@@ -36,7 +37,9 @@ void GetExtensionBasicInfo(const Extension* extension,
   info->SetString(kNameKey, extension->name());
   info->SetBoolean(kEnabledKey, enabled);
   info->SetBoolean(kKioskEnabledKey,
-                   KioskEnabledInfo::IsKioskEnabled(extension));
+                   KioskModeInfo::IsKioskEnabled(extension));
+  info->SetBoolean(kKioskOnlyKey,
+                   KioskModeInfo::IsKioskOnly(extension));
   info->SetBoolean(kOfflineEnabledKey,
                    OfflineEnabledInfo::IsOfflineEnabled(extension));
   info->SetString(kVersionKey, extension->VersionString());
diff --git a/chrome/chrome_common.gypi b/chrome/chrome_common.gypi
index 3e7cef5..e050471 100644
--- a/chrome/chrome_common.gypi
+++ b/chrome/chrome_common.gypi
@@ -223,8 +223,8 @@
         'common/extensions/manifest_handlers/externally_connectable.h',
         'common/extensions/manifest_handlers/icons_handler.cc',
         'common/extensions/manifest_handlers/icons_handler.h',
-        'common/extensions/manifest_handlers/kiosk_enabled_info.cc',
-        'common/extensions/manifest_handlers/kiosk_enabled_info.h',
+        'common/extensions/manifest_handlers/kiosk_mode_info.cc',
+        'common/extensions/manifest_handlers/kiosk_mode_info.h',
         'common/extensions/manifest_handlers/minimum_chrome_version_checker.cc',
         'common/extensions/manifest_handlers/minimum_chrome_version_checker.h',
         'common/extensions/manifest_handlers/nacl_modules_handler.cc',
diff --git a/chrome/common/extensions/api/_manifest_features.json b/chrome/common/extensions/api/_manifest_features.json
index d893129..605560e 100644
--- a/chrome/common/extensions/api/_manifest_features.json
+++ b/chrome/common/extensions/api/_manifest_features.json
@@ -204,6 +204,12 @@
       "platform_app"
     ]
   },
+  "kiosk_only": {
+    "channel": "dev",
+    "extension_types": [
+      "platform_app"
+    ]
+  },
   "manifest_version": {
     "channel": "stable",
     "extension_types": "all"
diff --git a/chrome/common/extensions/chrome_manifest_handlers.cc b/chrome/common/extensions/chrome_manifest_handlers.cc
index 333996cb..c4cf4db 100644
--- a/chrome/common/extensions/chrome_manifest_handlers.cc
+++ b/chrome/common/extensions/chrome_manifest_handlers.cc
@@ -33,7 +33,7 @@
 #include "chrome/common/extensions/manifest_handlers/content_scripts_handler.h"
 #include "chrome/common/extensions/manifest_handlers/externally_connectable.h"
 #include "chrome/common/extensions/manifest_handlers/icons_handler.h"
-#include "chrome/common/extensions/manifest_handlers/kiosk_enabled_info.h"
+#include "chrome/common/extensions/manifest_handlers/kiosk_mode_info.h"
 #include "chrome/common/extensions/manifest_handlers/minimum_chrome_version_checker.h"
 #include "chrome/common/extensions/manifest_handlers/nacl_modules_handler.h"
 #include "chrome/common/extensions/manifest_handlers/offline_enabled_info.h"
@@ -71,7 +71,7 @@ void RegisterChromeManifestHandlers() {
 #if defined(OS_CHROMEOS)
   (new InputComponentsHandler)->Register();
 #endif
-  (new KioskEnabledHandler)->Register();
+  (new KioskModeHandler)->Register();
   (new ManagedModeHandler)->Register();
   (new MediaGalleriesHandlerParser)->Register();
   (new MimeTypesHandlerParser)->Register();
diff --git a/chrome/common/extensions/docs/templates/articles/manifest/kiosk_enabled.html b/chrome/common/extensions/docs/templates/articles/manifest/kiosk_enabled.html
index 0256389..8eb7b58 100644
--- a/chrome/common/extensions/docs/templates/articles/manifest/kiosk_enabled.html
+++ b/chrome/common/extensions/docs/templates/articles/manifest/kiosk_enabled.html
@@ -6,3 +6,10 @@ In kiosk mode, the platform app window will cover the entire surface of the
 display (forced full screen). The kiosk-enabled apps are expected to be designed
 with this constraint in mind.
 </p>
+
+<h1 id="kiosk_only">Manifest - Kiosk Only</h1>
+
+<p>
+Whether the packaged app is only intended to be installed and run in ChromeOS
+kiosk mode. This field is only valid if the <code>kiosk_enabled</code> field is <code>true</code>.
+</p>
diff --git a/chrome/common/extensions/docs/templates/json/manifest.json b/chrome/common/extensions/docs/templates/json/manifest.json
index b3ac91f..2cb5331 100644
--- a/chrome/common/extensions/docs/templates/json/manifest.json
+++ b/chrome/common/extensions/docs/templates/json/manifest.json
@@ -75,7 +75,11 @@
     "example": "publicKey"
   },
   "kiosk_enabled": {
-    "documentation": "manifest/kiosk_enabled.html",
+    "documentation": "manifest/kiosk_enabled.html#kiosk_enabled",
+    "example": true
+  },
+  "kiosk_only": {
+    "documentation": "manifest/kiosk_enabled.html#kiosk_only",
     "example": true
   },
   "manifest_version": {
diff --git a/chrome/common/extensions/manifest_handlers/kiosk_enabled_info.cc b/chrome/common/extensions/manifest_handlers/kiosk_enabled_info.cc
deleted file mode 100644
index 4c50de5..0000000
--- a/chrome/common/extensions/manifest_handlers/kiosk_enabled_info.cc
+++ /dev/null
@@ -1,60 +0,0 @@
-// 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.
-
-#include "chrome/common/extensions/manifest_handlers/kiosk_enabled_info.h"
-
-#include "base/memory/scoped_ptr.h"
-#include "base/strings/string16.h"
-#include "base/strings/string_util.h"
-#include "base/strings/utf_string_conversions.h"
-#include "base/values.h"
-#include "extensions/common/manifest_constants.h"
-
-namespace extensions {
-
-namespace keys = manifest_keys;
-
-KioskEnabledInfo::KioskEnabledInfo(bool is_kiosk_enabled)
-    : kiosk_enabled(is_kiosk_enabled) {
-}
-
-KioskEnabledInfo::~KioskEnabledInfo() {
-}
-
-// static
-bool KioskEnabledInfo::IsKioskEnabled(const Extension* extension) {
-  KioskEnabledInfo* info = static_cast<KioskEnabledInfo*>(
-      extension->GetManifestData(keys::kKioskEnabled));
-  return info ? info->kiosk_enabled : false;
-}
-
-KioskEnabledHandler::KioskEnabledHandler() {
-}
-
-KioskEnabledHandler::~KioskEnabledHandler() {
-}
-
-bool KioskEnabledHandler::Parse(Extension* extension, string16* error) {
-  DCHECK(extension->manifest()->HasKey(keys::kKioskEnabled));
-
-  bool kiosk_enabled = false;
-  if (!extension->manifest()->GetBoolean(keys::kKioskEnabled, &kiosk_enabled)) {
-    *error = ASCIIToUTF16(manifest_errors::kInvalidKioskEnabled);
-    return false;
-  }
-
-  // All other use cases should be already filtered out by manifest feature
-  // checks.
-  DCHECK(extension->is_platform_app());
-
-  extension->SetManifestData(keys::kKioskEnabled,
-                             new KioskEnabledInfo(kiosk_enabled));
-  return true;
-}
-
-const std::vector<std::string> KioskEnabledHandler::Keys() const {
-  return SingleKey(keys::kKioskEnabled);
-}
-
-}  // namespace extensions
diff --git a/chrome/common/extensions/manifest_handlers/kiosk_enabled_info.h b/chrome/common/extensions/manifest_handlers/kiosk_enabled_info.h
deleted file mode 100644
index 3c61b08..0000000
--- a/chrome/common/extensions/manifest_handlers/kiosk_enabled_info.h
+++ /dev/null
@@ -1,42 +0,0 @@
-// 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_ENABLED_INFO_H_
-#define CHROME_COMMON_EXTENSIONS_MANIFEST_HANDLERS_KIOSK_ENABLED_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 KioskEnabledInfo : public Extension::ManifestData {
-  explicit KioskEnabledInfo(bool is_kiosk_enabled);
-  virtual ~KioskEnabledInfo();
-
-  bool kiosk_enabled;
-
-  // Whether the extension or app should be enabled in app kiosk mode.
-  static bool IsKioskEnabled(const Extension* extension);
-};
-
-// Parses the "kiosk_enabled" manifest key.
-class KioskEnabledHandler : public ManifestHandler {
- public:
-  KioskEnabledHandler();
-  virtual ~KioskEnabledHandler();
-
-  virtual bool Parse(Extension* extension, string16* error) OVERRIDE;
- private:
-  virtual const std::vector<std::string> Keys() const OVERRIDE;
-
-  DISALLOW_COPY_AND_ASSIGN(KioskEnabledHandler);
-};
-
-}  // namespace extensions
-
-#endif  // CHROME_COMMON_EXTENSIONS_MANIFEST_HANDLERS_KIOSK_ENABLED_INFO_H_
diff --git a/chrome/common/extensions/manifest_handlers/kiosk_mode_info.cc b/chrome/common/extensions/manifest_handlers/kiosk_mode_info.cc
new file mode 100644
index 0000000..e610490
--- /dev/null
+++ b/chrome/common/extensions/manifest_handlers/kiosk_mode_info.cc
@@ -0,0 +1,89 @@
+// Copyright 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.
+
+#include "chrome/common/extensions/manifest_handlers/kiosk_mode_info.h"
+
+#include "base/memory/scoped_ptr.h"
+#include "base/strings/string16.h"
+#include "base/strings/string_util.h"
+#include "base/strings/utf_string_conversions.h"
+#include "base/values.h"
+#include "extensions/common/manifest_constants.h"
+
+namespace extensions {
+
+namespace keys = manifest_keys;
+
+KioskModeInfo::KioskModeInfo(KioskStatus kiosk_status)
+    : kiosk_status(kiosk_status) {
+}
+
+KioskModeInfo::~KioskModeInfo() {
+}
+
+// static
+bool KioskModeInfo::IsKioskEnabled(const Extension* extension) {
+  KioskModeInfo* info = static_cast<KioskModeInfo*>(
+      extension->GetManifestData(keys::kKioskMode));
+  return info ? info->kiosk_status != NONE : false;
+}
+
+// static
+bool KioskModeInfo::IsKioskOnly(const Extension* extension) {
+  KioskModeInfo* info = static_cast<KioskModeInfo*>(
+      extension->GetManifestData(keys::kKioskMode));
+  return info ? info->kiosk_status == ONLY : false;
+}
+
+KioskModeHandler::KioskModeHandler() {
+  supported_keys_.push_back(keys::kKioskEnabled);
+  supported_keys_.push_back(keys::kKioskOnly);
+}
+
+KioskModeHandler::~KioskModeHandler() {
+}
+
+bool KioskModeHandler::Parse(Extension* extension, string16* error) {
+  const Manifest* manifest = extension->manifest();
+  DCHECK(manifest->HasKey(keys::kKioskEnabled) ||
+         manifest->HasKey(keys::kKioskOnly));
+
+  bool kiosk_enabled = false;
+  if (manifest->HasKey(keys::kKioskEnabled) &&
+      !manifest->GetBoolean(keys::kKioskEnabled, &kiosk_enabled)) {
+    *error = ASCIIToUTF16(manifest_errors::kInvalidKioskEnabled);
+    return false;
+  }
+
+  bool kiosk_only = false;
+  if (manifest->HasKey(keys::kKioskOnly) &&
+      !manifest->GetBoolean(keys::kKioskOnly, &kiosk_only)) {
+    *error = ASCIIToUTF16(manifest_errors::kInvalidKioskOnly);
+    return false;
+  }
+
+  if (kiosk_only && !kiosk_enabled) {
+    *error = ASCIIToUTF16(manifest_errors::kInvalidKioskOnlyButNotEnabled);
+    return false;
+  }
+
+  // All other use cases should be already filtered out by manifest feature
+  // checks.
+  DCHECK(extension->is_platform_app());
+
+  KioskModeInfo::KioskStatus kiosk_status = KioskModeInfo::NONE;
+  if (kiosk_enabled)
+    kiosk_status = kiosk_only ? KioskModeInfo::ONLY : KioskModeInfo::ENABLED;
+
+  extension->SetManifestData(keys::kKioskMode,
+      new KioskModeInfo(kiosk_status));
+
+  return true;
+}
+
+const std::vector<std::string> KioskModeHandler::Keys() const {
+  return supported_keys_;
+}
+
+}  // namespace extensions
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 0000000..05a553a
--- /dev/null
+++ b/chrome/common/extensions/manifest_handlers/kiosk_mode_info.h
@@ -0,0 +1,55 @@
+// Copyright 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_
diff --git a/chrome/common/extensions/manifest_tests/extension_manifests_kiosk_unittest.cc b/chrome/common/extensions/manifest_tests/extension_manifests_kiosk_unittest.cc
index b63abee..fa00693 100644
--- a/chrome/common/extensions/manifest_tests/extension_manifests_kiosk_unittest.cc
+++ b/chrome/common/extensions/manifest_tests/extension_manifests_kiosk_unittest.cc
@@ -3,55 +3,97 @@
 // found in the LICENSE file.
 
 #include "chrome/common/extensions/extension.h"
-#include "chrome/common/extensions/manifest_handlers/kiosk_enabled_info.h"
+#include "chrome/common/extensions/manifest_handlers/kiosk_mode_info.h"
 #include "chrome/common/extensions/manifest_tests/extension_manifest_test.h"
 #include "extensions/common/manifest_constants.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace extensions {
 
-class ExtensionManifestKioskEnabledTest : public ExtensionManifestTest {
+class ExtensionManifestKioskModeTest : public ExtensionManifestTest {
 };
 
-TEST_F(ExtensionManifestKioskEnabledTest, InvalidKioskEnabled) {
+TEST_F(ExtensionManifestKioskModeTest, InvalidKioskEnabled) {
   LoadAndExpectError("kiosk_enabled_invalid.json",
                      manifest_errors::kInvalidKioskEnabled);
 }
 
-TEST_F(ExtensionManifestKioskEnabledTest, KioskEnabledHostedApp) {
+TEST_F(ExtensionManifestKioskModeTest, KioskEnabledHostedApp) {
   scoped_refptr<Extension> extension(
       LoadAndExpectSuccess("kiosk_enabled_hosted_app.json"));
-  EXPECT_FALSE(KioskEnabledInfo::IsKioskEnabled(extension.get()));
+  EXPECT_FALSE(KioskModeInfo::IsKioskEnabled(extension.get()));
 }
 
-TEST_F(ExtensionManifestKioskEnabledTest, KioskEnabledPackagedApp) {
+TEST_F(ExtensionManifestKioskModeTest, KioskEnabledPackagedApp) {
   scoped_refptr<Extension> extension(
       LoadAndExpectSuccess("kiosk_enabled_packaged_app.json"));
-  EXPECT_FALSE(KioskEnabledInfo::IsKioskEnabled(extension.get()));
+  EXPECT_FALSE(KioskModeInfo::IsKioskEnabled(extension.get()));
 }
 
-TEST_F(ExtensionManifestKioskEnabledTest, KioskEnabledExtension) {
+TEST_F(ExtensionManifestKioskModeTest, KioskEnabledExtension) {
   scoped_refptr<Extension> extension(
       LoadAndExpectSuccess("kiosk_enabled_extension.json"));
-  EXPECT_FALSE(KioskEnabledInfo::IsKioskEnabled(extension.get()));
+  EXPECT_FALSE(KioskModeInfo::IsKioskEnabled(extension.get()));
 }
 
-TEST_F(ExtensionManifestKioskEnabledTest, KioskEnabledPlatformApp) {
+TEST_F(ExtensionManifestKioskModeTest, KioskEnabledPlatformApp) {
   scoped_refptr<Extension> extension(
       LoadAndExpectSuccess("kiosk_enabled_platform_app.json"));
-  EXPECT_TRUE(KioskEnabledInfo::IsKioskEnabled(extension.get()));
+  EXPECT_TRUE(KioskModeInfo::IsKioskEnabled(extension.get()));
 }
 
-TEST_F(ExtensionManifestKioskEnabledTest, KioskDisabledPlatformApp) {
+TEST_F(ExtensionManifestKioskModeTest, KioskDisabledPlatformApp) {
   scoped_refptr<Extension> extension(
       LoadAndExpectSuccess("kiosk_disabled_platform_app.json"));
-  EXPECT_FALSE(KioskEnabledInfo::IsKioskEnabled(extension.get()));
+  EXPECT_FALSE(KioskModeInfo::IsKioskEnabled(extension.get()));
 }
 
-TEST_F(ExtensionManifestKioskEnabledTest, KioskDefaultPlatformApp) {
+TEST_F(ExtensionManifestKioskModeTest, KioskDefaultPlatformApp) {
   scoped_refptr<Extension> extension(
       LoadAndExpectSuccess("kiosk_default_platform_app.json"));
-  EXPECT_FALSE(KioskEnabledInfo::IsKioskEnabled(extension.get()));
+  EXPECT_FALSE(KioskModeInfo::IsKioskEnabled(extension.get()));
+  EXPECT_FALSE(KioskModeInfo::IsKioskOnly(extension.get()));
+}
+
+TEST_F(ExtensionManifestKioskModeTest, KioskEnabledDefaultRequired) {
+  scoped_refptr<Extension> extension(
+      LoadAndExpectSuccess("kiosk_enabled_platform_app.json"));
+  EXPECT_TRUE(KioskModeInfo::IsKioskEnabled(extension.get()));
+  EXPECT_FALSE(KioskModeInfo::IsKioskOnly(extension.get()));
+}
+
+TEST_F(ExtensionManifestKioskModeTest, KioskOnlyPlatformApp) {
+  scoped_refptr<Extension> extension(
+      LoadAndExpectSuccess("kiosk_only_platform_app.json"));
+  EXPECT_TRUE(KioskModeInfo::IsKioskOnly(extension.get()));
+}
+
+TEST_F(ExtensionManifestKioskModeTest, KioskOnlyInvalid) {
+  LoadAndExpectError("kiosk_only_invalid.json",
+                     manifest_errors::kInvalidKioskOnly);
+}
+
+TEST_F(ExtensionManifestKioskModeTest, KioskOnlyButNotEnabled) {
+  LoadAndExpectError("kiosk_only_not_enabled.json",
+                     manifest_errors::kInvalidKioskOnlyButNotEnabled);
+}
+
+TEST_F(ExtensionManifestKioskModeTest, KioskOnlyHostedApp) {
+  scoped_refptr<Extension> extension(
+      LoadAndExpectSuccess("kiosk_only_hosted_app.json"));
+  EXPECT_FALSE(KioskModeInfo::IsKioskOnly(extension.get()));
+}
+
+TEST_F(ExtensionManifestKioskModeTest, KioskOnlyPackagedApp) {
+  scoped_refptr<Extension> extension(
+      LoadAndExpectSuccess("kiosk_only_packaged_app.json"));
+  EXPECT_FALSE(KioskModeInfo::IsKioskOnly(extension.get()));
+}
+
+TEST_F(ExtensionManifestKioskModeTest, KioskOnlyExtension) {
+  scoped_refptr<Extension> extension(
+      LoadAndExpectSuccess("kiosk_only_extension.json"));
+  EXPECT_FALSE(KioskModeInfo::IsKioskOnly(extension.get()));
 }
 
 }  // namespace extensions
diff --git a/chrome/test/data/extensions/kiosk/kiosk_only.pem b/chrome/test/data/extensions/kiosk/kiosk_only.pem
new file mode 100644
index 0000000..9197ca5
--- /dev/null
+++ b/chrome/test/data/extensions/kiosk/kiosk_only.pem
@@ -0,0 +1,15 @@
+-----BEGIN PRIVATE KEY-----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-----END PRIVATE KEY-----
diff --git a/chrome/test/data/extensions/kiosk/kiosk_only/background.js b/chrome/test/data/extensions/kiosk/kiosk_only/background.js
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/chrome/test/data/extensions/kiosk/kiosk_only/background.js
diff --git a/chrome/test/data/extensions/kiosk/kiosk_only/manifest.json b/chrome/test/data/extensions/kiosk/kiosk_only/manifest.json
new file mode 100644
index 0000000..79796b0
--- /dev/null
+++ b/chrome/test/data/extensions/kiosk/kiosk_only/manifest.json
@@ -0,0 +1,12 @@
+{
+  "name": "Kiosk Only Test",
+  "description": "Test for 'kiosk_only' manifest attribute",
+  "version": "1",
+  "app": {
+    "background": {
+      "scripts": ["background.js"]
+    }
+  },
+  "kiosk_enabled": true,
+  "kiosk_only": true
+}
diff --git a/chrome/test/data/extensions/manifest_tests/kiosk_only_extension.json b/chrome/test/data/extensions/manifest_tests/kiosk_only_extension.json
new file mode 100644
index 0000000..f72a461
--- /dev/null
+++ b/chrome/test/data/extensions/manifest_tests/kiosk_only_extension.json
@@ -0,0 +1,6 @@
+{
+  "name": "kiosk only extension",
+  "version": "1",
+  "kiosk_enabled": true,
+  "kiosk_only": true
+}
diff --git a/chrome/test/data/extensions/manifest_tests/kiosk_only_hosted_app.json b/chrome/test/data/extensions/manifest_tests/kiosk_only_hosted_app.json
new file mode 100644
index 0000000..9e7c8f4
--- /dev/null
+++ b/chrome/test/data/extensions/manifest_tests/kiosk_only_hosted_app.json
@@ -0,0 +1,15 @@
+{
+  "name": "kiosk only hosted app",
+  "version": "1",
+  "app": {
+    "urls": [
+      "http://www.google.com/mail/",
+      "http://www.google.com/foobar/"
+    ],
+    "launch": {
+      "web_url": "http://www.google.com/mail/"
+    }
+  },
+  "kiosk_enabled": true,
+  "kiosk_only": true 
+}
diff --git a/chrome/test/data/extensions/manifest_tests/kiosk_only_invalid.json b/chrome/test/data/extensions/manifest_tests/kiosk_only_invalid.json
new file mode 100644
index 0000000..596595e
--- /dev/null
+++ b/chrome/test/data/extensions/manifest_tests/kiosk_only_invalid.json
@@ -0,0 +1,11 @@
+{
+  "name": "invalid kiosk only value",
+  "version": "1",
+  "app": {
+    "background": {
+      "scripts": ["background.js"]
+    }
+  },
+  "kiosk_enabled": true,
+  "kiosk_only": "nope"
+}
diff --git a/chrome/test/data/extensions/manifest_tests/kiosk_only_not_enabled.json b/chrome/test/data/extensions/manifest_tests/kiosk_only_not_enabled.json
new file mode 100644
index 0000000..13ee398
--- /dev/null
+++ b/chrome/test/data/extensions/manifest_tests/kiosk_only_not_enabled.json
@@ -0,0 +1,10 @@
+{
+  "name": "kiosk only not enabled",
+  "version": "1",
+  "app": {
+    "background": {
+      "scripts": ["background.js"]
+    }
+  },
+  "kiosk_only": true 
+}
diff --git a/chrome/test/data/extensions/manifest_tests/kiosk_only_packaged_app.json b/chrome/test/data/extensions/manifest_tests/kiosk_only_packaged_app.json
new file mode 100644
index 0000000..b1b705b
--- /dev/null
+++ b/chrome/test/data/extensions/manifest_tests/kiosk_only_packaged_app.json
@@ -0,0 +1,11 @@
+{
+  "name": "kiosk only packaged app",
+  "version": "1",
+  "app": {
+    "launch": {
+      "local_path": "loco.html"
+    }
+  },
+  "kiosk_enabled": true,
+  "kiosk_only": true
+}
diff --git a/chrome/test/data/extensions/manifest_tests/kiosk_only_platform_app.json b/chrome/test/data/extensions/manifest_tests/kiosk_only_platform_app.json
new file mode 100644
index 0000000..e45a0ce
--- /dev/null
+++ b/chrome/test/data/extensions/manifest_tests/kiosk_only_platform_app.json
@@ -0,0 +1,11 @@
+{
+  "name": "kiosk only platform app",
+  "version": "1",
+  "app": {
+    "background": {
+      "scripts": ["background.js"]
+    }
+  },
+  "kiosk_enabled": true,
+  "kiosk_only": true
+}
diff --git a/extensions/common/manifest_constants.cc b/extensions/common/manifest_constants.cc
index ec5a878..f4e00a6 100644
--- a/extensions/common/manifest_constants.cc
+++ b/extensions/common/manifest_constants.cc
@@ -57,6 +57,8 @@ const char kJs[] = "js";
 const char kKey[] = "key";
 const char kKeycode[] = "keyCode";
 const char kKioskEnabled[] = "kiosk_enabled";
+const char kKioskOnly[] = "kiosk_only";
+const char kKioskMode[] = "kiosk_mode";
 const char kLanguage[] = "language";
 const char kLaunch[] = "app.launch";
 const char kLaunchContainer[] = "app.launch.container";
@@ -416,6 +418,10 @@ const char kInvalidKeyBindingUnknownPlatform[] =
     " 'chromeos', 'linux' and 'default'.";
 const char kInvalidKioskEnabled[] =
     "Invalid value for 'kiosk_enabled'.";
+const char kInvalidKioskOnly[] =
+    "Invalid value for 'kiosk_only'.";
+const char kInvalidKioskOnlyButNotEnabled[] =
+    "The 'kiosk_only' key is set, but 'kiosk_enabled' is not set.";
 const char kInvalidLaunchContainer[] =
     "Invalid value for 'app.launch.container'.";
 const char kInvalidLaunchValue[] =
diff --git a/extensions/common/manifest_constants.h b/extensions/common/manifest_constants.h
index 241387e..9f56879 100644
--- a/extensions/common/manifest_constants.h
+++ b/extensions/common/manifest_constants.h
@@ -66,6 +66,8 @@ extern const char kJs[];
 extern const char kKey[];
 extern const char kKeycode[];
 extern const char kKioskEnabled[];
+extern const char kKioskOnly[];
+extern const char kKioskMode[];
 extern const char kLanguage[];
 extern const char kLaunch[];
 extern const char kLaunchContainer[];
@@ -317,6 +319,8 @@ extern const char kInvalidKeyBindingMissingPlatform[];
 extern const char kInvalidKeyBindingTooMany[];
 extern const char kInvalidKeyBindingUnknownPlatform[];
 extern const char kInvalidKioskEnabled[];
+extern const char kInvalidKioskOnly[];
+extern const char kInvalidKioskOnlyButNotEnabled[];
 extern const char kInvalidLaunchContainer[];
 extern const char kInvalidLaunchValue[];
 extern const char kInvalidLaunchValueContainer[];