Allow createLocalChild to specify previous sibling frame.

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 150 matching lines @@
 
     virtual WebString contentAsText(size_t maxChars) const override;
     virtual WebString contentAsMarkup() const override;
     virtual WebString layoutTreeAsText(LayoutAsTextControls toShow = LayoutAsTextNormal) const override;
     virtual WebString markerTextForListItem(const WebElement&) const override;
     virtual WebRect selectionBoundsRect() const override;
 
     virtual bool selectionStartHasSpellingMarkerFor(int from, int length) const override;
     virtual WebString layerTreeAsText(bool showDebugInfo = false) const override;
 
+    // TODO(alexmos): Remove once Chromium side is updated to take previous sibling.
     virtual WebLocalFrame* createLocalChild(const WebString& name, WebSandboxFlags, WebFrameClient*) override;
+    virtual WebLocalFrame* createLocalChild(const WebString& name, WebSandboxFlags, WebFrameClient*, WebFrame*) override;
     virtual WebRemoteFrame* createRemoteChild(const WebString& name, WebSandboxFlags, WebRemoteFrameClient*) override;
 
     void initializeCoreFrame(FrameHost*, FrameOwner*, const AtomicString& name);
 
     void setCoreFrame(PassRefPtrWillBeRawPtr<RemoteFrame>);
     RemoteFrame* frame() const { return m_frame.get(); }
 
     WebRemoteFrameClient* client() const { return m_client; }
 
     static WebRemoteFrameImpl* fromFrame(RemoteFrame&);
@@ skipping 29 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