Send initializeChildFrame from RenderFrameProxy instead of WebLocalFrame

Source/web/WebRemoteFrameImpl.cpp

Index: Source/web/WebRemoteFrameImpl.cpp
diff --git a/Source/web/WebRemoteFrameImpl.cpp b/Source/web/WebRemoteFrameImpl.cpp
index ddd1552ed65134b927d39c4eb5d2d695ba96b064..bf4b6f7730f3aa09d60e0a550fd21bc43a8aa487 100644
--- a/Source/web/WebRemoteFrameImpl.cpp
+++ b/Source/web/WebRemoteFrameImpl.cpp
@@ -6,6 +6,7 @@
 #include "web/WebRemoteFrameImpl.h"
 
 #include "core/frame/FrameOwner.h"
+#include "core/frame/FrameView.h"
 #include "core/frame/RemoteFrame.h"
 #include "core/frame/Settings.h"
 #include "core/page/Page.h"
@@ -879,4 +880,13 @@ WebRemoteFrameImpl* WebRemoteFrameImpl::fromFrame(RemoteFrame& frame)
     return static_cast<RemoteFrameClient*>(frame.client())->webFrame();
 }
 
+void WebRemoteFrameImpl::initializeFromFrame(WebLocalFrame* source) const
+{
+    ASSERT(source);
+    WebLocalFrameImpl* localFrameImpl = toWebLocalFrameImpl(source);
+    client()->initializeChildFrame(
+        localFrameImpl->frame()->view()->frameRect(),
+        localFrameImpl->frame()->view()->visibleContentScaleFactor());
+}
+
 } // namespace blink