Revert of Replace pinch scrollbars with regular scrollbars.

Source/web/DevToolsEmulator.cpp

Index: Source/web/DevToolsEmulator.cpp
diff --git a/Source/web/DevToolsEmulator.cpp b/Source/web/DevToolsEmulator.cpp
index 062a6aab265b91d011d3906d1d02a044fd386f64..0a43dd81c3189993659d69f4a2ac97dd5e74978e 100644
--- a/Source/web/DevToolsEmulator.cpp
+++ b/Source/web/DevToolsEmulator.cpp
@@ -5,7 +5,6 @@
 #include "config.h"
 #include "web/DevToolsEmulator.h"
 
-#include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/Settings.h"
 #include "core/page/Page.h"
@@ -214,7 +213,6 @@
     RuntimeEnabledFeatures::setOverlayScrollbarsEnabled(true);
     m_webViewImpl->enableViewport();
     m_webViewImpl->settings()->setViewportMetaEnabled(true);
-    m_webViewImpl->page()->frameHost().visualViewport().initializeScrollbars();
     m_webViewImpl->settings()->setShrinksViewportContentToFit(true);
     m_webViewImpl->page()->settings().setTextAutosizingEnabled(true);
     m_webViewImpl->page()->settings().setPreferCompositingToLCDTextEnabled(true);
@@ -225,6 +223,8 @@
     m_originalDefaultMinimumPageScaleFactor = m_webViewImpl->defaultMinimumPageScaleFactor();
     m_originalDefaultMaximumPageScaleFactor = m_webViewImpl->defaultMaximumPageScaleFactor();
     m_webViewImpl->setDefaultPageScaleLimits(0.25f, 5);
+    if (m_webViewImpl->layerTreeView())
+        m_webViewImpl->layerTreeView()->setHidePinchScrollbarsNearMinScale(false);
 }
 
 void DevToolsEmulator::disableMobileEmulation()
@@ -234,7 +234,6 @@
     RuntimeEnabledFeatures::setOverlayScrollbarsEnabled(m_isOverlayScrollbarsEnabled);
     m_webViewImpl->disableViewport();
     m_webViewImpl->settings()->setViewportMetaEnabled(false);
-    m_webViewImpl->page()->frameHost().visualViewport().initializeScrollbars();
     m_webViewImpl->settings()->setShrinksViewportContentToFit(false);
     m_webViewImpl->page()->settings().setTextAutosizingEnabled(m_embedderTextAutosizingEnabled);
     m_webViewImpl->page()->settings().setPreferCompositingToLCDTextEnabled(m_embedderPreferCompositingToLCDTextEnabled);
@@ -245,6 +244,10 @@
     m_webViewImpl->setDefaultPageScaleLimits(
         m_originalDefaultMinimumPageScaleFactor,
         m_originalDefaultMaximumPageScaleFactor);
+    if (m_webViewImpl->layerTreeView()) {
+        m_webViewImpl->layerTreeView()->setHidePinchScrollbarsNearMinScale(
+            m_hidePinchScrollbarsNearMinScale);
+    }
 }
 
 void DevToolsEmulator::setTouchEventEmulationEnabled(bool enabled)