kiosk: Add status report for os update and running app

components/policy/proto/device_management_backend.proto

Index: components/policy/proto/device_management_backend.proto
diff --git a/components/policy/proto/device_management_backend.proto b/components/policy/proto/device_management_backend.proto
index bbdc25ee30a9c4c00f12dbefef543d6c0cfdd878..f0d3ba034c36281a8d1de7b21fd109c114209ce7 100644
--- a/components/policy/proto/device_management_backend.proto
+++ b/components/policy/proto/device_management_backend.proto
@@ -377,16 +377,16 @@ message PolicyData {
   // The unique directory api ID of the device which was generated on the
   // server-side.
   optional string directory_api_id = 22;
-  
+
   // List of device affiliation IDs. If exists overlap between user
   // affiliation IDs and device affiliation IDs, we consider that the user is
   // affiliated on the device. Otherwise the user is not affiliated on the
-  // device. Should be fetched with device policy. Ignored if fetched with 
+  // device. Should be fetched with device policy. Ignored if fetched with
   // other polices.
   repeated string device_affiliation_ids = 23;
-  
+
   // List of user affiliation IDs. The list is used to define if current user
-  // is affiliated on the device. See device_affiliation_ids for details. 
+  // is affiliated on the device. See device_affiliation_ids for details.
   // Should be fetched with user policy. Ignored if fetched with other polices.
   repeated string user_affiliation_ids = 24;
 }
@@ -745,6 +745,36 @@ message DeviceStatusReportRequest {
 
   // CPU temp information.
   repeated CPUTempInfo cpu_temp_info = 16;
+
+  // This field is set only when an OS update is needed because of the required
+  // platform version of an updated kiosk app is different from the current
+  // OS version.
+  optional OsUpdateStatus os_update_status = 17;
+
+  // Set only when there is an auto launched with zero delay kiosk app
+  // and it is currently running. Otherwise, this field is empty.
+  optional AppStatus running_kiosk_app = 18;
+}
+
+message OsUpdateStatus {
+  enum UpdateStatus {
+    OS_UP_TO_DATE = 0;
+    OS_IMAGE_DOWNLOAD_NOT_STARTED = 1;
+    OS_IMAGE_DOWNLOAD_IN_PROGRESS = 2;
+    OS_UPDATE_NEED_REBOOT = 3;
+  }
+
+  optional UpdateStatus update_status = 1;
+
+  // New platform version of the os image being downloaded and applied. It
+  // is only set when update status is OS_IMAGE_DOWNLOAD_IN_PROGRESS or
+  // OS_UPDATE_NEED_REBOOT. Note this could be a dummy "0.0.0.0" for
+  // OS_UPDATE_NEED_REBOOT status for some edge cases, e.g. update engine is
+  // restarted without a reboot.
+  optional string new_platform_version = 2;
+
+  // New required platform version from the pending updated kiosk app.
+  optional string new_required_platform_version = 3;
 }
 
 // Provides status information for an installed app/extension.
@@ -760,6 +790,9 @@ message AppStatus {
 
   // If true, the application is currently in a self-reported error state.
   optional bool error = 4;
+
+  // App required Chrome version, specified in app’s manifest file.
+  optional string required_platform_version = 5;
 }
 
 // Report session (a user on one device) level status.