[sensors] Add Permission guard to the generic sensor apis.

chrome/android/java/src/org/chromium/chrome/browser/preferences/website/WebsitePermissionsFetcher.java

 // Copyright 2015 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.
 
 package org.chromium.chrome.browser.preferences.website;
 
 import android.util.Pair;
 
 import org.chromium.base.Callback;
 import org.chromium.chrome.browser.ContentSettingsType;
@@ skipping 35 matching lines @@
      * TODO(mvanouwerkerk): Add an argument |url| to only fetch permissions for
      * sites from the same origin as that of |url| - https://crbug.com/459222.
      */
     public void fetchAllPreferences() {
         TaskQueue queue = new TaskQueue();
         // Populate features from more specific to less specific.
         // Geolocation lookup permission is per-origin and per-embedder.
         queue.add(new GeolocationInfoFetcher());
         // Midi sysex access permission is per-origin and per-embedder.
         queue.add(new MidiInfoFetcher());
+        // Sensor access permission is per-origin and per-embedder.
+        queue.add(new SensorInfoFetcher());
         // Cookies are stored per-host.
         queue.add(new CookieExceptionInfoFetcher());
         // Local storage info is per-origin.
         queue.add(new LocalStorageInfoFetcher());
         // Website storage is per-host.
         queue.add(new WebStorageInfoFetcher());
         // Popup exceptions are host-based patterns (unless we start
         // synchronizing popup exceptions with desktop Chrome).
         queue.add(new PopupExceptionInfoFetcher());
         // Subresource filter exceptions are host-based.
@@ skipping 181 matching lines @@
         public void run() {
             for (MidiInfo info : WebsitePreferenceBridge.getMidiInfo()) {
                 WebsiteAddress origin = WebsiteAddress.create(info.getOrigin());
                 if (origin == null) continue;
                 WebsiteAddress embedder = WebsiteAddress.create(info.getEmbedder());
                 findOrCreateSite(origin, embedder).setMidiInfo(info);
             }
         }
     }
 
+    private class SensorInfoFetcher extends Task {
+        @Override
+        public void run() {
+            for (SensorInfo info : WebsitePreferenceBridge.getSensorInfo()) {
+                WebsiteAddress origin = WebsiteAddress.create(info.getOrigin());
+                if (origin == null) continue;
+                WebsiteAddress embedder = WebsiteAddress.create(info.getEmbedder());
+                findOrCreateSite(origin, embedder).setSensorInfo(info);
+            }
+        }
+    }
+
     private class PopupExceptionInfoFetcher extends Task {
         @Override
         public void run() {
             setException(ContentSettingsType.CONTENT_SETTINGS_TYPE_POPUPS);
         }
     }
 
     private class SubresourceFilterExceptionInfoFetcher extends Task {
         @Override
         public void run() {
@@ skipping 123 matching lines @@
         }
     }
 
     private class PermissionsAvailableCallbackRunner extends Task {
         @Override
         public void run() {
             mCallback.onWebsitePermissionsAvailable(mSites.values());
         }
     }
 }