Only anchor along the block layout axis.

third_party/WebKit/Source/web/tests/VisualViewportTest.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/VisualViewport.h"
 
 #include "core/dom/Document.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
@@ skipping 1830 matching lines @@
 
     initializeWithDesktopSettings();
     webViewImpl()->resize(IntSize(800, 600));
 
     registerMockedHttpURLLoad("icb-relative-content.html");
     navigateTo(m_baseURL + "icb-relative-content.html");
 
     FrameView& frameView = *webViewImpl()->mainFrameImpl()->frameView();
     frameView.layoutViewportScrollableArea()->setScrollPosition(DoublePoint(700, 500), ProgrammaticScroll);
 
-    webViewImpl()->resize(IntSize(400, 300));
-    EXPECT_POINT_EQ(DoublePoint(300, 200), frameView.layoutViewportScrollableArea()->scrollPositionDouble());
+    webViewImpl()->resize(IntSize(800, 300));
+    EXPECT_POINT_EQ(DoublePoint(700, 200), frameView.layoutViewportScrollableArea()->scrollPositionDouble());
 
     RuntimeEnabledFeatures::setScrollAnchoringEnabled(wasScrollAnchoringEnabled);
 }
 
 // Ensure that resize anchoring as happens when top controls hide/show affects
 // the scrollable area that's currently set as the root scroller.
 TEST_P(ParameterizedVisualViewportTest, ResizeAnchoringWithRootScroller)
 {
     bool wasRootScrollerEnabled =
         RuntimeEnabledFeatures::setRootScrollerEnabled();
@@ skipping 55 matching lines @@
 
     EXPECT_POINT_EQ(
         DoublePoint(),
         frameView.layoutViewportScrollableArea()->scrollPositionDouble());
     EXPECT_EQ(600, scroller->scrollTop());
 
     RuntimeEnabledFeatures::setSetRootScrollerEnabled(wasRootScrollerEnabled);
 }
 
 } // namespace