[RootLayerScrolls] Fix frame scrolling layer in ScrollingCoordinator

third_party/WebKit/Source/web/tests/VisualViewportTest.cpp

Index: third_party/WebKit/Source/web/tests/VisualViewportTest.cpp
diff --git a/third_party/WebKit/Source/web/tests/VisualViewportTest.cpp b/third_party/WebKit/Source/web/tests/VisualViewportTest.cpp
index 74884f37fc6a0d69fd905dc5edd84b482f88c574..6d08e07e6b7143d40b7703239cf9cd2fc300efdb 100644
--- a/third_party/WebKit/Source/web/tests/VisualViewportTest.cpp
+++ b/third_party/WebKit/Source/web/tests/VisualViewportTest.cpp
@@ -1652,13 +1652,15 @@ TEST_P(VisualViewportTest, TestChangingContentSizeAffectsScrollBounds) {
   navigateTo(m_baseURL + "content-width-1000.html");
 
   FrameView& frameView = *webViewImpl()->mainFrameImpl()->frameView();
-  WebLayer* scrollLayer = frameView.layerForScrolling()->platformLayer();
 
   webViewImpl()->mainFrame()->executeScript(
       WebScriptSource("var content = document.getElementById(\"content\");"
                       "content.style.width = \"1500px\";"
                       "content.style.height = \"2400px\";"));
   frameView.updateAllLifecyclePhases();
+  WebLayer* scrollLayer = frameView.layoutViewportScrollableArea()
+                              ->layerForScrolling()
+                              ->platformLayer();
 
   EXPECT_SIZE_EQ(IntSize(1500, 2400), IntSize(scrollLayer->bounds()));
 }