Browser Plugin: Add HTML5-like postMessage support

content/browser/browser_plugin/browser_plugin_guest.cc

Index: content/browser/browser_plugin/browser_plugin_guest.cc
diff --git a/content/browser/browser_plugin/browser_plugin_guest.cc b/content/browser/browser_plugin/browser_plugin_guest.cc
index 4b1ff93c641e29a0482c34dbce3e16794f67e3a8..aa51d1fefca788e2bd6b43b028ce009a3107ffe4 100644
--- a/content/browser/browser_plugin/browser_plugin_guest.cc
+++ b/content/browser/browser_plugin/browser_plugin_guest.cc
@@ -41,7 +41,9 @@ BrowserPluginGuest::BrowserPluginGuest(int instance_id,
       damage_buffer_size_(0),
 #endif
       pending_update_counter_(0),
-      guest_hang_timeout_(kGuestHangTimeout) {
+      guest_hang_timeout_(kGuestHangTimeout),
+      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);
@@ -200,7 +202,7 @@ void BrowserPluginGuest::HandleInputEvent(RenderViewHost* render_view_host,
     // embedder doesn't hang.
     BrowserPluginHostMsg_HandleInputEvent::WriteReplyParams(
         reply_message, false /* handled */, cursor_);
-    embedder_render_process_host()->Send(reply_message);
+    SendMessageToEmbedder(reply_message);
     return;
   }
 
@@ -214,6 +216,15 @@ void BrowserPluginGuest::HandleInputEvent(RenderViewHost* render_view_host,
   guest_rvh->StartHangMonitorTimeout(guest_hang_timeout_);
 }
 
+void BrowserPluginGuest::RouteMessageEvent(
+    const ViewMsg_PostMessage_Params& params) {
+  SendMessageToEmbedder(new BrowserPluginMsg_ReceiveMessage(
+      instance_id(),
+      swapped_out_embedder_routing_id(),
+      params.source_origin,
+      params.data));
+}
+
 void BrowserPluginGuest::HandleInputEventAck(RenderViewHost* render_view_host,
                                              bool handled) {
   RenderViewHostImpl* guest_rvh =