Send all of the icon URLs listed in Web Manifest to WebAPK Server.

chrome/browser/android/banners/app_banner_manager_android.cc

Index: chrome/browser/android/banners/app_banner_manager_android.cc
diff --git a/chrome/browser/android/banners/app_banner_manager_android.cc b/chrome/browser/android/banners/app_banner_manager_android.cc
index 4a97b86a0b98dd535761b30109ec3a1d817725d4..11e2df9a1c854a1d6425f0f0ff64ad82ef345a84 100644
--- a/chrome/browser/android/banners/app_banner_manager_android.cc
+++ b/chrome/browser/android/banners/app_banner_manager_android.cc
@@ -44,7 +44,7 @@ std::unique_ptr<ShortcutInfo> CreateShortcutInfo(
   if (!manifest.IsEmpty()) {
     shortcut_info->UpdateFromManifest(manifest);
     shortcut_info->manifest_url = manifest_url;
-    shortcut_info->icon_url = icon_url;
+    shortcut_info->best_icon_url = icon_url;
     shortcut_info->UpdateSource(ShortcutInfo::SOURCE_APP_BANNER);
   }
   return shortcut_info;