Move webstorePrivate DelegatedInstall functions into new dashboardPrivate API

chrome/common/extensions/api/_api_features.json

 // Copyright (c) 2012 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/chrome.
 // 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 228 matching lines @@
     "contexts": ["blessed_extension"]
   },
   "copresencePrivate": {
     "dependencies": ["permission:copresencePrivate"],
     "contexts": ["blessed_extension"]
   },
   "cryptotokenPrivate": {
     "dependencies": ["permission:cryptotokenPrivate"],
     "contexts": ["blessed_extension"]
   },
+  "dashboardPrivate": [{
+    "channel": "stable",
+    "contexts": ["blessed_web_page", "web_page"],
+    "matches": ["https://chrome.google.com/*"]
+  }, {
+    "channel": "stable",
+    "contexts": ["blessed_extension"],
+    "whitelist": [
+      "B44D08FD98F1523ED5837D78D0A606EA9D6206E5"  // Web Store

[not at google - send to devlin, 2015/07/31 14:42:20]

What does the webstore need from this?

[Marc Treib, 2015/07/31 15:28:42]

The webstore also needs to call this API - remote install is possible from both
the webstore and our dashboard. (That's basically the reason why this was in
webstorePrivate in the first place.)
Or was the question "why isn't the URL pattern above sufficient"? Because the
webstore is not in a web_page context, and if I add "blessed_extension" above,
then the API will be available to any extension.

Or alternatively, I might have misunderstood something, in which case please
correct me :)

+    ]
+  }],
   "dataReductionProxy": {
     "dependencies": ["permission:dataReductionProxy"],
     "contexts": ["blessed_extension"]
   },
   "debugger": {
     "dependencies": ["permission:debugger"],
     "contexts": ["blessed_extension"]
   },
   "declarativeContent": {
     "dependencies": ["permission:declarativeContent"],
@@ skipping 546 matching lines @@
     "internal": true,
     "channel": "stable",
     "dependencies": ["permission:webview"],
     "contexts": ["blessed_extension"]
   },
   "windows": {
     "dependencies": ["api:tabs"],
     "contexts": ["blessed_extension"]
   }
 }