Enable sending MessagePorts to a different renderer (Chromium side)

content/browser/web_contents/web_contents_impl.cc

 // 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.
 
 #include "content/browser/web_contents/web_contents_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 16 matching lines @@
 #include "content/browser/dom_storage/dom_storage_context_wrapper.h"
 #include "content/browser/dom_storage/session_storage_namespace_impl.h"
 #include "content/browser/download/download_stats.h"
 #include "content/browser/download/mhtml_generation_manager.h"
 #include "content/browser/download/save_package.h"
 #include "content/browser/gpu/compositor_util.h"
 #include "content/browser/gpu/gpu_data_manager_impl.h"
 #include "content/browser/gpu/gpu_process_host.h"
 #include "content/browser/host_zoom_map_impl.h"
 #include "content/browser/loader/resource_dispatcher_host_impl.h"
+#include "content/browser/message_port_message_filter.h"
+#include "content/browser/message_port_service.h"
 #include "content/browser/power_save_blocker_impl.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/browser/site_instance_impl.h"
 #include "content/browser/web_contents/interstitial_page_impl.h"
 #include "content/browser/web_contents/navigation_entry_impl.h"
 #include "content/browser/web_contents/web_contents_view_guest.h"
 #include "content/browser/webui/generic_handler.h"
 #include "content/browser/webui/web_ui_controller_factory_registry.h"
@@ skipping 3304 matching lines @@
   // Note: This check means that an embedder could theoretically receive a
   // postMessage from anyone (not just its own guests). However, this is
   // probably not a risk for apps since other pages won't have references
   // to App windows.
   if (!rvh->GetSiteInstance()->IsRelatedSiteInstance(GetSiteInstance()) &&
       !GetBrowserPluginGuest() && !GetBrowserPluginEmbedder())
     return;
 
   ViewMsg_PostMessage_Params new_params(params);
 
+  if (!params.message_port_ids.empty()) {
+    MessagePortMessageFilter* message_port_message_filter =
+        static_cast<RenderProcessHostImpl*>(GetRenderProcessHost())
+            ->message_port_message_filter();
+    std::vector<int> new_routing_ids(params.message_port_ids.size());
+    for (size_t i = 0; i < params.message_port_ids.size(); ++i) {
+      new_routing_ids[i] = message_port_message_filter->GetNextRoutingID();
+      MessagePortService::GetInstance()->UpdateMessagePort(
+          params.message_port_ids[i],
+          message_port_message_filter,
+          new_routing_ids[i]);
+    }
+    new_params.new_routing_ids = new_routing_ids;
+  }
+
   // If there is a source_routing_id, translate it to the routing ID for
   // the equivalent swapped out RVH in the target process.  If we need
   // to create a swapped out RVH for the source tab, we create its opener
   // chain as well, since those will also be accessible to the target page.
   if (new_params.source_routing_id != MSG_ROUTING_NONE) {
     // Try to look up the WebContents for the source page.
     WebContentsImpl* source_contents = NULL;
     RenderViewHostImpl* source_rvh = RenderViewHostImpl::FromID(
         rvh->GetProcess()->GetID(), params.source_routing_id);
     if (source_rvh) {
@@ skipping 429 matching lines @@
 }
 
 void WebContentsImpl::OnFrameRemoved(
     RenderViewHostImpl* render_view_host,
     int64 frame_id) {
    FOR_EACH_OBSERVER(WebContentsObserver, observers_,
                      FrameDetached(render_view_host, frame_id));
 }
 
 }  // namespace content