kiosk: Defer app update until platform matches

chrome/browser/chromeos/app_mode/kiosk_app_update_install_gate.cc

Index: chrome/browser/chromeos/app_mode/kiosk_app_update_install_gate.cc
diff --git a/chrome/browser/chromeos/app_mode/kiosk_app_update_install_gate.cc b/chrome/browser/chromeos/app_mode/kiosk_app_update_install_gate.cc
new file mode 100644
index 0000000000000000000000000000000000000000..333f6fb3f2692a5f41ef21af1797da97bc1f6cf7
--- /dev/null
+++ b/chrome/browser/chromeos/app_mode/kiosk_app_update_install_gate.cc
@@ -0,0 +1,42 @@
+// Copyright 2016 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/chromeos/app_mode/kiosk_app_update_install_gate.h"
+
+#include "base/logging.h"
+#include "chrome/browser/chromeos/app_mode/kiosk_app_manager.h"
+#include "chrome/browser/profiles/profile.h"
+#include "extensions/browser/extension_registry.h"
+#include "extensions/common/extension.h"
+
+namespace chromeos {
+
+KioskAppUpdateInstallGate::KioskAppUpdateInstallGate(Profile* profile)
+    : profile_(profile),
+      registry_(extensions::ExtensionRegistry::Get(profile)) {}
+
+KioskAppUpdateInstallGate::~KioskAppUpdateInstallGate() {}
+
+extensions::InstallGate::Action KioskAppUpdateInstallGate::ShouldDelay(
+    const extensions::Extension* extension,
+    bool install_immediately) {
+  // Install if this is the first install or the required platform version is
+  // compliant with the current platform version.
+  const bool first_install = !registry_->GetInstalledExtension(extension->id());
+  const bool platform_compliant =
+      KioskAppManager::Get()->IsPlatformCompliantWithApp(extension);
+  if (first_install || platform_compliant) {
+    LOG_IF(WARNING, first_install && !platform_compliant)
+        << "Install on an incompliant platform for the first install.";
+    return INSTALL;
+  }
+
+  // Otherwise, delay install but update the required platform version meta data
+  // to allow update engine to move on to the new platform version.
+  KioskAppManager::Get()->UpdateAppDataFromProfile(extension->id(), profile_,
+                                                   extension);
+  return DELAY;
+}
+
+}  // namespace chromeos