Allow component IME extension use app.window and add 'ime' window type for app window

chrome/common/extensions/api/_api_features.json

Index: chrome/common/extensions/api/_api_features.json
diff --git a/chrome/common/extensions/api/_api_features.json b/chrome/common/extensions/api/_api_features.json
index f0b174ca66eabde457c8b45c1bf19bd20f9d335c..d2ae56ea6713a16e632a1a8c1731c830975d9808 100644
--- a/chrome/common/extensions/api/_api_features.json
+++ b/chrome/common/extensions/api/_api_features.json
@@ -42,7 +42,9 @@
     "blacklist": [
       "2FC374607C2DF285634B67C64A2E356C607091C3",  // Quickoffice
       "3727DD3E564B6055387425027AD74C58784ACC15",  // Quickoffice internal
-      "12E618C3C6E97495AAECF2AC12DEB082353241C6"   // QO component extension
+      "12E618C3C6E97495AAECF2AC12DEB082353241C6",  // QO component extension
+      "06BE211D5F014BAB34BC22D9DDA09C63A81D828E",  // Official xkb extension
+      "F94EE6AB36D6C6588670B2B01EB65212D9C64E33"   // Open source xkb extension
     ],
     "channel": "stable",
     "extension_types": ["hosted_app", "extension", "legacy_packaged_app"],
@@ -69,12 +71,21 @@
     "channel": "dev",
     "contexts": ["blessed_extension"]
   },
-  "app.window": {
+  "app.window": [{
     "channel": "stable",
     "contexts": ["blessed_extension"],
     "extension_types": ["platform_app"],
     "noparent": true
-  },
+  }, {
+    "channel": "stable",
+    "contexts": ["blessed_extension"],
+    "extension_types": ["extension"],
+    "noparent": true,
+    "whitelist": [
+      "06BE211D5F014BAB34BC22D9DDA09C63A81D828E",  // Official xkb extension
+      "F94EE6AB36D6C6588670B2B01EB65212D9C64E33"   // Open source xkb extension
+    ]
+  }],
   "app.currentWindowInternal": {
     "noparent": true,
     "internal": true,