Fix Jumplist favicons to have high resolution in HDPI Windows displays

ui/gfx/image/image.cc

Index: ui/gfx/image/image.cc
diff --git a/ui/gfx/image/image.cc b/ui/gfx/image/image.cc
index 12254c17def66a5b46fb45db8257732cf14af173..617f71b3ffdd330d8043d4d71ecc604547fbca48 100644
--- a/ui/gfx/image/image.cc
+++ b/ui/gfx/image/image.cc
@@ -482,6 +482,11 @@ const SkBitmap* Image::ToSkBitmap() const {
   return ToImageSkia()->bitmap();
 }
 
+const SkBitmap* Image::ToSkBitmap2x() const {
+  // Possibly create and cache an intermediate ImageRepSkia.
+  return ToImageSkia()->bitmap2x();
+}
+
 const ImageSkia* Image::ToImageSkia() const {
   internal::ImageRep* rep = GetRepresentation(kImageRepSkia, false);
   if (!rep) {
@@ -653,6 +658,10 @@ SkBitmap Image::AsBitmap() const {
   return IsEmpty() ? SkBitmap() : *ToSkBitmap();
 }
 
+SkBitmap Image::AsBitmap2x() const {
+  return IsEmpty() ? SkBitmap() : *ToSkBitmap2x();
+}
+
 ImageSkia Image::AsImageSkia() const {
   return IsEmpty() ? ImageSkia() : *ToImageSkia();
 }