Track NPObject ownership by the originating plugins' NPP identifier. [4/6] (Chrome)

content/child/npobject_util.cc

 // Copyright 2013 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.
 
 #include "content/child/npobject_util.h"
 
 #include "base/strings/string_util.h"
 #include "content/child/np_channel_base.h"
 #include "content/child/npobject_proxy.h"
 #include "content/child/plugin_messages.h"
@@ skipping 186 matching lines @@
               variant.value.objectValue);
           if (route_id != MSG_ROUTING_NONE) {
             param->npobject_routing_id = route_id;
           } else {
             route_id = channel->GenerateRouteID();
             new NPObjectStub(
                 variant.value.objectValue, channel, route_id, render_view_id,
                 page_url);
             param->npobject_routing_id = route_id;
           }
+
+          // Include the object's owner.
+          NPP owner = WebBindings::getObjectOwner(variant.value.objectValue);
+          param->npobject_owner_id =
+              channel->GetExistingRouteForNPObjectOwner(owner);
         } else {
           param->type = NPVARIANT_PARAM_VOID;
         }
       }
       break;
     }
     default:
       NOTREACHED();
   }
 
@@ skipping 35 matching lines @@
       break;
     }
     case NPVARIANT_PARAM_SENDER_OBJECT_ROUTING_ID: {
       result->type = NPVariantType_Object;
       NPObject* object =
           channel->GetExistingNPObjectProxy(param.npobject_routing_id);
       if (object) {
         WebBindings::retainObject(object);
         result->value.objectValue = object;
       } else {
+        NPP owner =
+            channel->GetExistingNPObjectOwner(param.npobject_owner_id);
+        // TODO(wez): Once NPObject tracking lands in Blink, check |owner| and
+        // return NPVariantType_Void if it is NULL.
         result->value.objectValue =
             NPObjectProxy::Create(channel,
                                   param.npobject_routing_id,
                                   render_view_id,
-                                  page_url);
+                                  page_url,
+                                  owner);
       }
       break;
     }
     case NPVARIANT_PARAM_RECEIVER_OBJECT_ROUTING_ID: {
       NPObjectBase* npobject_base =
           channel->GetNPObjectListenerForRoute(param.npobject_routing_id);
       if (!npobject_base) {
         DLOG(WARNING) << "Invalid routing id passed in"
                       << param.npobject_routing_id;
         return false;
       }
 
       DCHECK(npobject_base->GetUnderlyingNPObject() != NULL);
 
       result->type = NPVariantType_Object;
       result->value.objectValue = npobject_base->GetUnderlyingNPObject();
       WebBindings::retainObject(result->value.objectValue);
       break;
     }
     default:
       NOTREACHED();
   }
   return true;
 }
 
 }  // namespace content