Browser Plugin: Add HTML5-like postMessage support

content/browser/browser_plugin/browser_plugin_guest.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/browser_plugin/browser_plugin_guest.h"
 
 #include <algorithm>
 
 #include "content/browser/browser_plugin/browser_plugin_guest_helper.h"
 #include "content/browser/browser_plugin/browser_plugin_host_factory.h"
@@ skipping 23 matching lines @@
                                        RenderViewHost* render_view_host)
     : WebContentsObserver(web_contents),
       embedder_render_process_host_(NULL),
       instance_id_(instance_id),
 #if defined(OS_WIN)
       damage_buffer_size_(0),
 #endif
       damage_buffer_scale_factor_(1.0f),
       pending_update_counter_(0),
       guest_hang_timeout_(
-          base::TimeDelta::FromMilliseconds(kGuestHangTimeoutMs)) {
+          base::TimeDelta::FromMilliseconds(kGuestHangTimeoutMs)),
+      swapped_out_embedder_routing_id_(MSG_ROUTING_NONE),
+      swapped_out_guest_routing_id_(MSG_ROUTING_NONE) {
   DCHECK(web_contents);
   // |render_view_host| manages the ownership of this BrowserPluginGuestHelper.
   new BrowserPluginGuestHelper(this, render_view_host);
 }
 
 BrowserPluginGuest::~BrowserPluginGuest() {
 }
 
 // static
 BrowserPluginGuest* BrowserPluginGuest::Create(
@@ skipping 166 matching lines @@
   pending_input_event_reply_.reset(reply_message);
   // Input events are handled synchronously, meaning it blocks the embedder. We
   // set a hang monitor here that will kill the guest process (5s timeout) if we
   // don't receive an ack. This will kill all the guests that are running in the
   // same process (undesired behavior).
   // TODO(fsamuel,lazyboy): Find a way to get rid of guest process kill
   // behavior. http://crbug.com/147272.
   guest_rvh->StartHangMonitorTimeout(guest_hang_timeout_);
 }
 
+void BrowserPluginGuest::RouteMessageEvent(
+    const ViewMsg_PostMessage_Params& params) {
+  BrowserPluginMsg_ReceiveMessage_Params out_params;
+  out_params.source_routing_id = swapped_out_embedder_routing_id();
+  out_params.source_origin = params.source_origin;
+  out_params.source_frame_id = params.source_frame_id;
+  out_params.target_frame_id = params.target_frame_id;
+  out_params.data = params.data;
+  SendMessageToEmbedder(
+      new BrowserPluginMsg_ReceiveMessage(instance_id(), out_params));
+}
+
 void BrowserPluginGuest::HandleInputEventAck(RenderViewHost* render_view_host,
                                              bool handled) {
   RenderViewHostImpl* guest_rvh =
       static_cast<RenderViewHostImpl*>(render_view_host);
   guest_rvh->StopHangMonitorTimeout();
   DCHECK(pending_input_event_reply_.get());
   IPC::Message* reply_message = pending_input_event_reply_.release();
   BrowserPluginHostMsg_HandleInputEvent::WriteReplyParams(reply_message,
                                                           handled,
                                                           cursor_);
@@ skipping 76 matching lines @@
       break;
   }
 }
 
 void BrowserPluginGuest::SendMessageToEmbedder(IPC::Message* msg) {
   DCHECK(embedder_render_process_host());
   embedder_render_process_host()->Send(msg);
 }
 
 }  // namespace content