Refactor ManifestIconSelector and update it for Manifest.icon.purpose

chrome/browser/installable/installable_manager.cc

Index: chrome/browser/installable/installable_manager.cc
diff --git a/chrome/browser/installable/installable_manager.cc b/chrome/browser/installable/installable_manager.cc
index a9d95f4b3cae5451cab2dae041556d4abf138106..9bca520f609693fe803534334440a5d8dc2d6a2f 100644
--- a/chrome/browser/installable/installable_manager.cc
+++ b/chrome/browser/installable/installable_manager.cc
@@ -439,16 +439,9 @@ void InstallableManager::CheckAndFetchBestIcon(const IconParams& params) {
   IconProperty& icon = icons_[params];
   icon.fetched = true;
 
-  // Filter by icon purpose.
-  std::vector<content::Manifest::Icon> filtered_icons;
-  std::copy_if(manifest().icons.begin(), manifest().icons.end(),
-               std::back_inserter(filtered_icons),
-               [icon_purpose](const content::Manifest::Icon& icon) {
-                 return base::ContainsValue(icon.purpose, icon_purpose);
-               });
-
   GURL icon_url = ManifestIconSelector::FindBestMatchingIcon(
-      filtered_icons, ideal_icon_size_in_px, minimum_icon_size_in_px);
+      manifest().icons, ideal_icon_size_in_px, minimum_icon_size_in_px,
+      icon_purpose);
 
   if (icon_url.is_empty()) {
     icon.error = NO_ACCEPTABLE_ICON;