Remove unused methods and variables in RenderFlowThread.

Source/core/rendering/RenderFlowThread.cpp

 /*
  * Copyright (C) 2011 Adobe Systems Incorporated. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above
  *    copyright notice, this list of conditions and the following
  *    disclaimer.
@@ skipping 29 matching lines @@
 #include "core/rendering/RenderLayer.h"
 #include "core/rendering/RenderRegion.h"
 #include "core/rendering/RenderView.h"
 #include "platform/PODIntervalTree.h"
 #include "platform/geometry/TransformState.h"
 
 namespace WebCore {
 
 RenderFlowThread::RenderFlowThread()
     : RenderBlockFlow(0)
-    , m_previousRegionCount(0)
     , m_regionsInvalidated(false)
     , m_regionsHaveUniformLogicalHeight(true)
     , m_pageLogicalSizeChanged(false)
 {
     setFlowThreadState(InsideOutOfFlowThread);
 }
 
-PassRefPtr<RenderStyle> RenderFlowThread::createFlowThreadStyle(RenderStyle* parentStyle)
-{
-    RefPtr<RenderStyle> newStyle(RenderStyle::create());
-    newStyle->inheritFrom(parentStyle);
-    newStyle->setDisplay(BLOCK);
-    newStyle->setPosition(AbsolutePosition);
-    newStyle->setZIndex(0);
-    newStyle->setLeft(Length(0, Fixed));
-    newStyle->setTop(Length(0, Fixed));
-    newStyle->setWidth(Length(100, Percent));
-    newStyle->setHeight(Length(100, Percent));
-    newStyle->font().update(nullptr);
-
-    return newStyle.release();
-}
-
 void RenderFlowThread::addRegionToThread(RenderRegion* renderRegion)
 {
     ASSERT(renderRegion);
     m_regionList.add(renderRegion);
     renderRegion->setIsValid(true);
 }
 
 void RenderFlowThread::removeRegionFromThread(RenderRegion* renderRegion)
 {
     ASSERT(renderRegion);
@@ skipping 225 matching lines @@
 
     return referencePoint;
 }
 
 LayoutUnit RenderFlowThread::pageLogicalTopForOffset(LayoutUnit offset)
 {
     RenderRegion* region = regionAtBlockOffset(offset);
     return region ? region->pageLogicalTopForOffset(offset) : LayoutUnit();
 }
 
-LayoutUnit RenderFlowThread::pageLogicalWidthForOffset(LayoutUnit offset)
-{
-    RenderRegion* region = regionAtBlockOffset(offset, true);
-    return region ? region->pageLogicalWidth() : contentLogicalWidth();
-}
-
 LayoutUnit RenderFlowThread::pageLogicalHeightForOffset(LayoutUnit offset)
 {
     RenderRegion* region = regionAtBlockOffset(offset);
     if (!region)
         return 0;
 
     return region->pageLogicalHeight();
 }
 
 LayoutUnit RenderFlowThread::pageRemainingLogicalHeightForOffset(LayoutUnit offset, PageBoundaryRule pageBoundaryRule)
@@ skipping 283 matching lines @@
 {
     if (!m_renderFlowThread)
         return;
     RenderView* view = m_renderFlowThread->view();
     ASSERT(view->flowThreadController()->currentRenderFlowThread() == m_renderFlowThread);
     view->flowThreadController()->setCurrentRenderFlowThread(m_previousRenderFlowThread);
 }
 
 
 } // namespace WebCore