ChromeOS: Expose 'device type' signal

chrome/common/extensions/api/chromeos_info_private.json

Index: chrome/common/extensions/api/chromeos_info_private.json
diff --git a/chrome/common/extensions/api/chromeos_info_private.json b/chrome/common/extensions/api/chromeos_info_private.json
index c0845421be1d524f66cf650668a10cbae1ce04ef..7f34f7ab8ace9e9e18a5f59e7cbfec9bb03aec6c 100644
--- a/chrome/common/extensions/api/chromeos_info_private.json
+++ b/chrome/common/extensions/api/chromeos_info_private.json
@@ -46,6 +46,12 @@
         "type": "string",
         "enum": ["managed", "not managed"],
         "description": "Status of enterprise enrollment."
+      },
+      {
+        "id": "DeviceType",
+        "type": "string",
+        "enum": ["chromebase", "chromebit", "chromebook", "chromebox", "chromedevice"],
+        "description": "Device type."
       }
     ],
     "functions": [
@@ -78,6 +84,7 @@
                   "sessionType": {"$ref": "SessionType", "optional": true},
                   "playStoreStatus": {"$ref": "PlayStoreStatus", "optional": true},
                   "managedDeviceStatus": {"$ref": "ManagedDeviceStatus", "optional": true},
+                  "deviceType": {"$ref": "DeviceType", "optional": true},
                   "clientId" : {"type": "string", "optional": true, "description": "Device client id"},
                   "timezone" : {"type": "string", "optional": true, "description": "Timezone"},
                   "a11yLargeCursorEnabled" : {"type": "boolean", "optional": true, "description": "If true, ChromeOS is showing enlarged cursor."},