Prevent image downscaling on HiDPI devices with impl-side painting.

Source/WebKit/chromium/src/LinkHighlight.cpp

Index: Source/WebKit/chromium/src/LinkHighlight.cpp
diff --git a/Source/WebKit/chromium/src/LinkHighlight.cpp b/Source/WebKit/chromium/src/LinkHighlight.cpp
index 061635f984c23045b66873df4ee9db22dc44e96f..f78723f9cf5dd96af9f9f11ac8a1b04d9759f35b 100644
--- a/Source/WebKit/chromium/src/LinkHighlight.cpp
+++ b/Source/WebKit/chromium/src/LinkHighlight.cpp
@@ -227,12 +227,13 @@ bool LinkHighlight::computeHighlightLayerPathAndPosition(RenderLayer* compositin
     return pathHasChanged;
 }
 
-void LinkHighlight::paintContents(WebCanvas* canvas, const WebRect& webClipRect, bool, WebFloatRect&)
+void LinkHighlight::paintContents(WebCanvas* canvas, const WebRect& webClipRect, bool, WebFloatRect&, bool deferred)
 {
     if (!m_node || !m_node->renderer())
         return;
 
     PlatformContextSkia platformContext(canvas);
+    platformContext.setDeferred(deferred);
     GraphicsContext gc(&platformContext);
     IntRect clipRect(IntPoint(webClipRect.x, webClipRect.y), IntSize(webClipRect.width, webClipRect.height));
     gc.clip(clipRect);