Make load events in iframe elements work with OOPIF (Chromium side).

content/renderer/render_frame_proxy.cc

Index: content/renderer/render_frame_proxy.cc
diff --git a/content/renderer/render_frame_proxy.cc b/content/renderer/render_frame_proxy.cc
index e98add45510e8b386b01ba5568200e68157456b3..733a0bbf2ea876b94f43d4f46a83b2bda8aebd9e 100644
--- a/content/renderer/render_frame_proxy.cc
+++ b/content/renderer/render_frame_proxy.cc
@@ -185,6 +185,7 @@ bool RenderFrameProxy::OnMessageReceived(const IPC::Message& msg) {
     IPC_MESSAGE_HANDLER(FrameMsg_DisownOpener, OnDisownOpener)
     IPC_MESSAGE_HANDLER(FrameMsg_DidStartLoading, OnDidStartLoading)
     IPC_MESSAGE_HANDLER(FrameMsg_DidStopLoading, OnDidStopLoading)
+    IPC_MESSAGE_HANDLER(FrameMsg_DispatchLoad, OnDispatchLoad)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
@@ -262,6 +263,10 @@ void RenderFrameProxy::OnDidStopLoading() {
   web_frame_->didStopLoading();
 }
 
+void RenderFrameProxy::OnDispatchLoad() {
+  web_frame_->DispatchLoadEventForFrameOwner();
+}
+
 void RenderFrameProxy::frameDetached() {
   if (web_frame_->parent())
     web_frame_->parent()->removeChild(web_frame_);