Add Android implementation of navigator.getInstalledRelatedApps.

third_party/WebKit/public/platform/modules/installedapp/installed_app_provider.mojom

 // Copyright 2017 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.
 
+[JavaPackage="org.chromium.installedapp.mojom"]
 module blink.mojom;
 
 import "related_application.mojom";
 
 // Mojo service for the getInstalledRelatedApps implementation.
 interface InstalledAppProvider {
   // Filters |related_apps|, keeping only those which are both installed on the
   // user's system, and related to the web origin of the requesting page.
   FilterInstalledApps(array<RelatedApplication> related_apps)
       => (array<RelatedApplication> installedApps);
 };