Move app.currentWindowInternal API implementation to extensions

extensions/common/api/_api_features.json

 // Copyright 2014 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.
 
 // This features file defines extension APIs implemented under src/extensions.
 // See extensions/common/features/* to understand this file, in particular
 // feature.h, simple_feature.h, and base_feature_provider.h.
 //
 // Note that specifying "web_page", "blessed_web_page", or "all" as a context
 // type will require manually updating chrome/renderer/resources/dispatcher.cc.
@@ skipping 18 matching lines @@
     "component_extensions_auto_granted": false,
     "contexts": ["blessed_extension"],
     "extension_types": ["extension"],
     "noparent": true,
     "whitelist": [
       "2FC374607C2DF285634B67C64A2E356C607091C3",  // Quickoffice
       "3727DD3E564B6055387425027AD74C58784ACC15",  // Quickoffice internal
       "12E618C3C6E97495AAECF2AC12DEB082353241C6"   // QO component extension
     ]
   }],
+  "app.currentWindowInternal": {
+    "noparent": true,
+    "internal": true,
+    "channel": "stable",
+    "contexts": ["blessed_extension"]
+  },
+  "app.currentWindowInternal.setShape": {
+    "dependencies": ["permission:app.window.shape"],
+    "contexts": ["blessed_extension"]
+  },
   "dns": {
     "dependencies": ["permission:dns"],
     "contexts": ["blessed_extension"]
   },
   // This is not a real API, only here for documentation purposes.
   // See http://crbug.com/275944 for background.
   "extensionTypes": {
     "channel": "stable",
     "extension_types": ["extension", "legacy_packaged_app", "platform_app"],
     "contexts": ["blessed_extension"]
@@ skipping 135 matching lines @@
   },
   "usb": {
     "dependencies": ["permission:usb"],
     "contexts": ["blessed_extension"]
   },
   "usbPrivate": {
     "channel": "dev",
     "contexts": ["webui"]
   }
 }