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

android_webview/browser/aw_permission_manager.cc

Index: android_webview/browser/aw_permission_manager.cc
diff --git a/android_webview/browser/aw_permission_manager.cc b/android_webview/browser/aw_permission_manager.cc
index 12a6cdd1a840377462fddf9adcff9e1515145945..1e402c6ba6d40f36fc1d662c2b0fb74ec1621bb1 100644
--- a/android_webview/browser/aw_permission_manager.cc
+++ b/android_webview/browser/aw_permission_manager.cc
@@ -311,6 +311,12 @@ int AwPermissionManager::RequestPermissions(
             base::Bind(&OnRequestResponse, weak_ptr_factory_.GetWeakPtr(),
                        request_id, permissions[i]));
         break;
+      case PermissionType::SENSORS:
+        delegate->RequestSensorPermission(
+            pending_request->requesting_origin,
+            base::Bind(&OnRequestResponse, weak_ptr_factory_.GetWeakPtr(),
+                       request_id, permissions[i]));
+        break;
       case PermissionType::AUDIO_CAPTURE:
       case PermissionType::VIDEO_CAPTURE:
       case PermissionType::NOTIFICATIONS:
@@ -449,6 +455,10 @@ void AwPermissionManager::CancelPermissionRequest(int request_id) {
         if (delegate)
           delegate->CancelMIDISysexPermissionRequests(requesting_origin);
         break;
+      case PermissionType::SENSORS:
+        if (delegate)
+          delegate->CancelSensorPermissionRequests(requesting_origin);
+        break;
       case PermissionType::NOTIFICATIONS:
       case PermissionType::PUSH_MESSAGING:
       case PermissionType::DURABLE_STORAGE: