Generalize ExtensionIconSet to store icon paths for custom size sets

chrome/browser/ui/ash/app_list/extension_app_item.cc

Index: chrome/browser/ui/ash/app_list/extension_app_item.cc
diff --git a/chrome/browser/ui/ash/app_list/extension_app_item.cc b/chrome/browser/ui/ash/app_list/extension_app_item.cc
index eb933c234ec691aaac2a820a526567d07d20f4b8..ad14bcee10b7123068789c83c0226f183737dbc9 100644
--- a/chrome/browser/ui/ash/app_list/extension_app_item.cc
+++ b/chrome/browser/ui/ash/app_list/extension_app_item.cc
@@ -18,6 +18,7 @@
 #include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/common/extensions/extension.h"
+#include "chrome/common/extensions/extension_constants.h"
 #include "chrome/common/extensions/extension_icon_set.h"
 #include "grit/chromium_strings.h"
 #include "grit/generated_resources.h"
@@ -155,10 +156,10 @@ void ExtensionAppItem::LoadImage(const Extension* extension) {
   tracker_.reset(new ImageLoadingTracker(this));
   tracker_->LoadImage(extension,
                       extension->GetIconResource(
-                          ExtensionIconSet::EXTENSION_ICON_LARGE,
+                          extension_misc::EXTENSION_ICON_LARGE,
                           ExtensionIconSet::MATCH_BIGGER),
-                      gfx::Size(ExtensionIconSet::EXTENSION_ICON_LARGE,
-                                ExtensionIconSet::EXTENSION_ICON_LARGE),
+                      gfx::Size(extension_misc::EXTENSION_ICON_LARGE,
+                                extension_misc::EXTENSION_ICON_LARGE),
                       ImageLoadingTracker::DONT_CACHE);
 }