Move app list search result icon sizes to app_list_constants.

ui/app_list/search_result.cc

Index: ui/app_list/search_result.cc
diff --git a/ui/app_list/search_result.cc b/ui/app_list/search_result.cc
index 771251fcb9bcd37ffcfa606ba83d51410c4fcb90..d663d0e91684ebdc2929804d926ae0dacc1aa3b3 100644
--- a/ui/app_list/search_result.cc
+++ b/ui/app_list/search_result.cc
@@ -4,6 +4,7 @@
 
 #include "ui/app_list/search_result.h"
 
+#include "ui/app_list/app_list_constants.h"
 #include "ui/app_list/search_result_observer.h"
 
 namespace app_list {
@@ -67,6 +68,18 @@ void SearchResult::SetPercentDownloaded(int percent_downloaded) {
                     OnPercentDownloadedChanged());
 }
 
+int SearchResult::GetPreferredIconSize() {
+  switch (display_type_) {
+    case DISPLAY_TILE:
+      return kTileIconSize;
+    case DISPLAY_LIST:
+      return kListIconSize;
+    default:
+      NOTREACHED();
+      return 0;
+  }
+}
+
 void SearchResult::NotifyItemInstalled() {
   FOR_EACH_OBSERVER(SearchResultObserver, observers_, OnItemInstalled());
 }