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

Source/web/RemoteBridgeFrameOwner.cpp

Index: Source/web/RemoteBridgeFrameOwner.cpp
diff --git a/Source/web/RemoteBridgeFrameOwner.cpp b/Source/web/RemoteBridgeFrameOwner.cpp
index 844e9f901d6c42577ee1548a9ee8e2e2e76a6e9c..9f19971dd45c0d6f8854ccde30c8846489704909 100644
--- a/Source/web/RemoteBridgeFrameOwner.cpp
+++ b/Source/web/RemoteBridgeFrameOwner.cpp
@@ -5,6 +5,8 @@
 #include "config.h"
 #include "web/RemoteBridgeFrameOwner.h"
 
+#include "public/web/WebFrameClient.h"
+
 namespace blink {
 
 RemoteBridgeFrameOwner::RemoteBridgeFrameOwner(PassRefPtrWillBeRawPtr<WebLocalFrameImpl> frame, SandboxFlags flags)
@@ -21,7 +23,8 @@ void RemoteBridgeFrameOwner::trace(Visitor* visitor)
 
 void RemoteBridgeFrameOwner::dispatchLoad()
 {
-    // FIXME: Implement. Most likely goes through m_frame->client().
+    if (m_frame->client())
+        m_frame->client()->dispatchLoad();
 }
 
 } // namespace blink