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

Source/web/WebRemoteFrameImpl.h

 // 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.
 
 #ifndef WebRemoteFrameImpl_h
 #define WebRemoteFrameImpl_h
 
 #include "core/frame/FrameOwner.h"
 #include "platform/heap/Handle.h"
 #include "public/web/WebRemoteFrame.h"
@@ skipping 170 matching lines @@
 
     WebRemoteFrameClient* client() const { return m_client; }
 
     static WebRemoteFrameImpl* fromFrame(RemoteFrame&);
 
     virtual void initializeFromFrame(WebLocalFrame*) const override;
 
     virtual void setReplicatedOrigin(const WebSecurityOrigin&) const override;
     virtual void setReplicatedSandboxFlags(WebSandboxFlags) const override;
     virtual void setReplicatedName(const WebString&) const override;
+    virtual void DispatchLoadEventForFrameOwner() const override;
 
     void didStartLoading() override;
     void didStopLoading() override;
 
 #if ENABLE(OILPAN)
     void trace(Visitor*);
 #endif
 
 private:
     RemoteFrameClientImpl m_frameClient;
@@ skipping 12 matching lines @@
     GC_PLUGIN_IGNORE("340522")
     Persistent<WebRemoteFrameImpl> m_selfKeepAlive;
 #endif
 };
 
 DEFINE_TYPE_CASTS(WebRemoteFrameImpl, WebFrame, frame, frame->isWebRemoteFrame(), frame.isWebRemoteFrame());
 
 } // namespace blink
 
 #endif // WebRemoteFrameImpl_h