Partially revert r181835 to fix link highlighting

Source/web/LinkHighlight.cpp

Index: Source/web/LinkHighlight.cpp
diff --git a/Source/web/LinkHighlight.cpp b/Source/web/LinkHighlight.cpp
index 5e16b123c343713ab2200d1631fbec5433882891..cebb4c108a479be4485ac02fe50b9a49b4b184be 100644
--- a/Source/web/LinkHighlight.cpp
+++ b/Source/web/LinkHighlight.cpp
@@ -40,7 +40,6 @@
 #include "core/rendering/compositing/CompositedLayerMapping.h"
 #include "core/rendering/style/ShadowData.h"
 #include "platform/graphics/Color.h"
-#include "platform/graphics/DisplayList.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebCompositorAnimationCurve.h"
 #include "public/platform/WebCompositorSupport.h"
@@ -228,13 +227,6 @@ bool LinkHighlight::computeHighlightLayerPathAndPosition(const RenderLayerModelO
     bool pathHasChanged = !(newPath == m_path);
     if (pathHasChanged) {
         m_path = newPath;
-
-        GraphicsContext gc(0);
-        gc.beginRecording(boundingRect);
-        gc.setFillColor(m_node->renderer()->style()->tapHighlightColor());
-        gc.fillPath(m_path);
-        m_displayList = gc.endRecording();
-
         m_contentLayer->layer()->setBounds(enclosingIntRect(boundingRect).size());
     }
 
@@ -251,8 +243,9 @@ void LinkHighlight::paintContents(WebCanvas* canvas, const WebRect& webClipRect,
     GraphicsContext gc(canvas,
         contextStatus == WebContentLayerClient::GraphicsContextEnabled ? GraphicsContext::NothingDisabled : GraphicsContext::FullyDisabled);
     IntRect clipRect(IntPoint(webClipRect.x, webClipRect.y), IntSize(webClipRect.width, webClipRect.height));
-    m_displayList->setClip(clipRect);
-    gc.drawDisplayList(m_displayList.get());
+    gc.clip(clipRect);
+    gc.setFillColor(m_node->renderer()->style()->tapHighlightColor());
+    gc.fillPath(m_path);
 }
 
 void LinkHighlight::startHighlightAnimationIfNeeded()