Shunt string-dumping functions from WebFrame to a side class.

third_party/WebKit/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 "core/frame/RemoteFrame.h"
 #include "public/web/WebRemoteFrame.h"
@@ skipping 123 matching lines @@
         int& marginTop,
         int& marginRight,
         int& marginBottom,
         int& marginLeft) override;
     WebString pageProperty(const WebString& propertyName, int pageIndex) override;
     void printPagesWithBoundaries(WebCanvas*, const WebSize&) override;
     void dispatchMessageEventWithOriginCheck(
         const WebSecurityOrigin& intendedTargetOrigin,
         const WebDOMEvent&) override;
 
-    WebString contentAsText(size_t maxChars) const override;
-    WebString contentAsMarkup() const override;
-    WebString layoutTreeAsText(LayoutAsTextControls toShow = LayoutAsTextNormal) const override;
-    WebString markerTextForListItem(const WebElement&) const override;
     WebRect selectionBoundsRect() const override;
 
     bool selectionStartHasSpellingMarkerFor(int from, int length) const override;
     WebString layerTreeAsText(bool showDebugInfo = false) const override;
 
     WebFrameImplBase* toImplBase() { return this; }
 
     // WebFrameImplBase methods:
     void initializeCoreFrame(FrameHost*, FrameOwner*, const AtomicString& name, const AtomicString& fallbackName) override;
     RemoteFrame* frame() const override { return m_frame.get(); }
@@ skipping 40 matching lines @@
     // cleared upon close().
     SelfKeepAlive<WebRemoteFrameImpl> m_selfKeepAlive;
 #endif
 };
 
 DEFINE_TYPE_CASTS(WebRemoteFrameImpl, WebFrame, frame, frame->isWebRemoteFrame(), frame.isWebRemoteFrame());
 
 } // namespace blink
 
 #endif // WebRemoteFrameImpl_h