arc: Use high-resolution icon for Play Store default item in app list.

chrome/browser/resources/component_extension_resources.grd

Index: chrome/browser/resources/component_extension_resources.grd
diff --git a/chrome/browser/resources/component_extension_resources.grd b/chrome/browser/resources/component_extension_resources.grd
index d6bf8d44fd8af6e1cc133867bf1592348e368f1c..9da1ef336068664edbdbd364dfc5776d0c4f307d 100644
--- a/chrome/browser/resources/component_extension_resources.grd
+++ b/chrome/browser/resources/component_extension_resources.grd
@@ -151,7 +151,8 @@
         <include name="IDR_ARC_SUPPORT_PLAYSTORE_CSS" file="chromeos/arc_support/playstore.css" type="BINDATA" />
         <include name="IDR_ARC_SUPPORT_PLAYSTORE_JS" file="chromeos/arc_support/playstore.js" type="BINDATA" />
         <include name="IDR_ARC_SUPPORT_MAIN" file="chromeos/arc_support/main.html" allowexternalscript="true" type="BINDATA" />
-        <include name="IDR_ARC_SUPPORT_ICON" file="chromeos/arc_support/icon/48.png" type="BINDATA" />
+        <include name="IDR_ARC_SUPPORT_ICON_48" file="chromeos/arc_support/icon/48.png" type="BINDATA" />
+        <include name="IDR_ARC_SUPPORT_ICON_96" file="chromeos/arc_support/icon/96.png" type="BINDATA" />
         <include name="IDR_ARC_SUPPORT_ICON_HEADER" file="chromeos/arc_support/images/header.png" type="BINDATA" />
       </if>
       <if expr="enable_plugins">