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

Source/web/WebRemoteFrameImpl.cpp

 // Copyright 2014 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 "config.h"
 #include "web/WebRemoteFrameImpl.h"
 
 #include "core/frame/FrameView.h"
 #include "core/frame/RemoteFrame.h"
 #include "core/frame/Settings.h"
@@ skipping 780 matching lines @@
     ASSERT(frame());
     frame()->securityContext()->enforceSandboxFlags(static_cast<SandboxFlags>(flags));
 }
 
 void WebRemoteFrameImpl::setReplicatedName(const WebString& name) const
 {
     ASSERT(frame());
     frame()->tree().setName(name, nullAtom);
 }
 
+void WebRemoteFrameImpl::DispatchLoadEventForFrameOwner() const
+{
+    ASSERT(frame()->owner()->isLocal());
+    frame()->owner()->dispatchLoad();
+}
+
 void WebRemoteFrameImpl::didStartLoading()
 {
     frame()->setIsLoading(true);
 }
 
 void WebRemoteFrameImpl::didStopLoading()
 {
     frame()->setIsLoading(false);
     if (parent() && parent()->isWebLocalFrame()) {
         WebLocalFrameImpl* parentFrame =
             toWebLocalFrameImpl(parent()->toWebLocalFrame());
         parentFrame->frame()->loader().checkCompleted();
     }
 }
 
 } // namespace blink