Browser Plugin: Add HTML5-like postMessage support

content/browser/browser_plugin/browser_plugin_guest_helper.cc

Index: content/browser/browser_plugin/browser_plugin_guest_helper.cc
diff --git a/content/browser/browser_plugin/browser_plugin_guest_helper.cc b/content/browser/browser_plugin/browser_plugin_guest_helper.cc
index 68512ca4b322f160ef99dadfec65639c4a5c3f0f..b5e53bd406dfd7afc8605fb74986beb5d9473296 100644
--- a/content/browser/browser_plugin/browser_plugin_guest_helper.cc
+++ b/content/browser/browser_plugin/browser_plugin_guest_helper.cc
@@ -5,9 +5,9 @@
 #include "content/browser/browser_plugin/browser_plugin_guest_helper.h"
 
 #include "content/browser/browser_plugin/browser_plugin_guest.h"
+#include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/common/view_messages.h"
-#include "content/public/browser/render_view_host.h"
 
 namespace content {
 
@@ -25,6 +25,16 @@ bool BrowserPluginGuestHelper::OnMessageReceived(
     const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(BrowserPluginGuestHelper, message)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_RouteMessageEvent, OnRouteMessageEvent)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+
+  if (static_cast<RenderViewHostImpl*>(render_view_host())->is_swapped_out()) {
+    return handled;
+  }
+
+  handled = true;
+  IPC_BEGIN_MESSAGE_MAP(BrowserPluginGuestHelper, message)
     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateRect, OnUpdateRect)
     IPC_MESSAGE_HANDLER(ViewHostMsg_HandleInputEvent_ACK, OnHandleInputEventAck)
     IPC_MESSAGE_HANDLER(ViewHostMsg_TakeFocus, OnTakeFocus)
@@ -65,4 +75,9 @@ void BrowserPluginGuestHelper::OnSetCursor(const WebCursor& cursor) {
   guest_->SetCursor(cursor);
 }
 
+void BrowserPluginGuestHelper::OnRouteMessageEvent(
+    const ViewMsg_PostMessage_Params& params) {
+  guest_->RouteMessageEvent(params);
+}
+
 }  // namespace content