Refactor ScrollableArea::setScrollPosition.

third_party/WebKit/Source/core/frame/RootFrameViewportTest.cpp

 // 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.
 
 #include "core/frame/RootFrameViewport.h"
 
 #include "core/layout/ScrollAlignment.h"
 #include "platform/geometry/DoubleRect.h"
 #include "platform/geometry/LayoutRect.h"
 #include "platform/scroll/ScrollableArea.h"
@@ skipping 60 matching lines @@
 
   DEFINE_INLINE_VIRTUAL_TRACE() { ScrollableArea::trace(visitor); }
 
  protected:
   ScrollableAreaStub(const IntSize& viewportSize, const IntSize& contentsSize)
       : m_userInputScrollableX(true),
         m_userInputScrollableY(true),
         m_viewportSize(viewportSize),
         m_contentsSize(contentsSize) {}
 
-  void setScrollOffset(const DoublePoint& offset, ScrollType) override {
+  void updateScrollPosition(const DoublePoint& offset, ScrollType) override {
     m_scrollPosition = offset;
   }
   bool shouldUseIntegerScrollOffset() const override { return true; }
   LayoutRect visualRectForScrollbarParts() const override {
     ASSERT_NOT_REACHED();
     return LayoutRect();
   }
   bool isActive() const override { return true; }
   bool isScrollCornerVisible() const override { return true; }
   IntRect scrollCornerRect() const override { return IntRect(); }
@@ skipping 418 matching lines @@
                   alternateScroller->scrollPositionDouble());
   EXPECT_POINT_EQ(DoublePoint(200, 200),
                   rootFrameViewport->scrollPositionDouble());
   EXPECT_POINT_EQ(DoublePoint(50, 50), layoutViewport->scrollPositionDouble());
 
   EXPECT_POINT_EQ(DoublePoint(550, 450),
                   rootFrameViewport->maximumScrollPositionDouble());
 }
 
 }  // namespace blink