Add Workman keyboard layout

chrome/browser/resources/chromeos/input_method/google_xkb_manifest.json

 {
   "name": "Chrome OS XKB",
   "version": "1.0.5.0",
   "description": "Chrome OS XKB",
   "default_locale": "en",
   "incognito": "split",
   "key": "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC7C0oB6YTnf69uhWnVTZl5TB/psHrJXgIPLYchFb0whlVCG8fqMo9lW/oxBmZXZ3N8T7zZrdYI/SUjoc9I5R/dMVVD2q4iKox+x7xlTbqSdVeOb6b9ZVJ24pLbO1L7feSNSBgR0t61jrC2eY/gf78h7w58UEQBPFT2mUxhhwodyQIDAQAB",
   "permissions": [
     "accessibilityFeatures.read",
     "app.window.alpha",
@@ skipping 190 matching lines @@
         "en",
         "en-US"
       ],
       "layouts": [
         "us(colemak)"
       ],
       "input_view": "inputview.html#id=us-colemak&language=en-US&passwordLayout=us-colemak&name=keyboard_us_colemak",
       "options_page": "hmm_options.html?code=xkb:us:colemak:eng"
     },
     {
+      "name": "__MSG_keyboard_us_workman__",
+      "type": "ime",
+      "id": "xkb:us:workman:eng",
+      "indicator": "WM",
+      "description": "",
+      "language": [
+        "en",
+        "en-US"
+      ],
+      "layouts": [
+        "us(workman)"
+      ],
+      "input_view": "inputview.html#id=us-workman&language=en-US&passwordLayout=us-workman&name=keyboard_us_workman",
+      "options_page": "hmm_options.html?code=xkb:us:workman:eng"
+    },
+    {
+      "name": "__MSG_keyboard_us_workman_international__",
+      "type": "ime",
+      "id": "xkb:us:workman-intl:eng",
+      "indicator": "WMI",
+      "description": "",
+      "language": [
+        "en",
+        "en-US"
+      ],
+      "layouts": [
+        "us(workman-intl)"
+      ],
+      "input_view": "inputview.html#id=us-workman-intl&language=en-US&passwordLayout=us-workman-intl&name=keyboard_us_workman_international",
+      "options_page": "hmm_options.html?code=xkb:us:workman-intl:eng"
+    },
+    {
       "name": "__MSG_keyboard_belgian__",
       "type": "ime",
       "id": "xkb:be::nld",
       "description": "",
       "language": [
         "nl"
       ],
       "layouts": [
         "be"
       ],
@@ skipping 803 matching lines @@
       ],
       "layouts": [
         "mk"
       ],
       "input_view": "inputview.html#id=mk&language=mk&passwordLayout=us-ltr&name=keyboard_macedonian",
       "options_page": "hmm_options.html?code=xkb:mk::mkd"
     }
   ],
   "manifest_version": 2
 }