Revert of Compute snap offsets (both repeat and element based)

third_party/WebKit/Source/core/dom/Document.cpp

Index: third_party/WebKit/Source/core/dom/Document.cpp
diff --git a/third_party/WebKit/Source/core/dom/Document.cpp b/third_party/WebKit/Source/core/dom/Document.cpp
index 32063ef10c15b8a2ef57a0427ea08db2af18a56f..6f65a6034684234cad78cb22e9deb207f84ee7a9 100644
--- a/third_party/WebKit/Source/core/dom/Document.cpp
+++ b/third_party/WebKit/Source/core/dom/Document.cpp
@@ -195,7 +195,6 @@
 #include "core/page/PointerLockController.h"
 #include "core/page/scrolling/RootScroller.h"
 #include "core/page/scrolling/ScrollingCoordinator.h"
-#include "core/page/scrolling/SnapCoordinator.h"
 #include "core/svg/SVGDocumentExtensions.h"
 #include "core/svg/SVGScriptElement.h"
 #include "core/svg/SVGTitleElement.h"
@@ -1637,9 +1636,6 @@ void Document::inheritHtmlAndBodyElementStyles(StyleRecalcChange change)
         columnGap = overflowStyle->columnGap();
     }
 
-    ScrollSnapType snapType = overflowStyle->getScrollSnapType();
-    const LengthPoint& snapDestination = overflowStyle->scrollSnapDestination();
-
     RefPtr<ComputedStyle> documentStyle = layoutView()->mutableStyle();
     if (documentStyle->getWritingMode() != rootWritingMode
         || documentStyle->direction() != rootDirection
@@ -1648,9 +1644,7 @@ void Document::inheritHtmlAndBodyElementStyles(StyleRecalcChange change)
         || documentStyle->imageRendering() != imageRendering
         || documentStyle->overflowX() != overflowX
         || documentStyle->overflowY() != overflowY
-        || documentStyle->columnGap() != columnGap
-        || documentStyle->getScrollSnapType() != snapType
-        || documentStyle->scrollSnapDestination() != snapDestination) {
+        || documentStyle->columnGap() != columnGap) {
         RefPtr<ComputedStyle> newStyle = ComputedStyle::clone(*documentStyle);
         newStyle->setWritingMode(rootWritingMode);
         newStyle->setDirection(rootDirection);
@@ -1660,8 +1654,6 @@ void Document::inheritHtmlAndBodyElementStyles(StyleRecalcChange change)
         newStyle->setOverflowX(overflowX);
         newStyle->setOverflowY(overflowY);
         newStyle->setColumnGap(columnGap);
-        newStyle->setScrollSnapType(snapType);
-        newStyle->setScrollSnapDestination(snapDestination);
         layoutView()->setStyle(newStyle);
         setupFontBuilder(*newStyle);
     }
@@ -5538,14 +5530,6 @@ bool Document::threadedParsingEnabledForTesting()
     return s_threadedParsingEnabledForTesting;
 }
 
-SnapCoordinator* Document::snapCoordinator()
-{
-    if (RuntimeEnabledFeatures::cssScrollSnapPointsEnabled() && !m_snapCoordinator)
-        m_snapCoordinator = SnapCoordinator::create();
-
-    return m_snapCoordinator.get();
-}
-
 void Document::setContextFeatures(ContextFeatures& features)
 {
     m_contextFeatures = &features;
@@ -5987,7 +5971,6 @@ DEFINE_TRACE(Document)
     visitor->trace(m_canvasFontCache);
     visitor->trace(m_intersectionObserverController);
     visitor->trace(m_intersectionObserverData);
-    visitor->trace(m_snapCoordinator);
     Supplementable<Document>::trace(visitor);
     TreeScope::trace(visitor);
     ContainerNode::trace(visitor);