Make some updates to extension iconography.

chrome/browser/ui/views/extensions/extension_install_dialog_view_browsertest.cc

Index: chrome/browser/ui/views/extensions/extension_install_dialog_view_browsertest.cc
diff --git a/chrome/browser/ui/views/extensions/extension_install_dialog_view_browsertest.cc b/chrome/browser/ui/views/extensions/extension_install_dialog_view_browsertest.cc
index 78ad7f9167cd134209757d61bea9a04dd1df2316..0ac3d9395ca43204acb70a7187590c9c9f47ed6b 100644
--- a/chrome/browser/ui/views/extensions/extension_install_dialog_view_browsertest.cc
+++ b/chrome/browser/ui/views/extensions/extension_install_dialog_view_browsertest.cc
@@ -79,9 +79,7 @@ ExtensionInstallDialogViewTestBase::CreatePrompt() {
 
   std::unique_ptr<ExtensionIconManager> icon_manager(
       new ExtensionIconManager());
-  const SkBitmap icon_bitmap = icon_manager->GetIcon(extension_->id());
-  gfx::Image icon = gfx::Image::CreateFrom1xBitmap(icon_bitmap);
-  prompt->set_icon(icon);
+  prompt->set_icon(icon_manager->GetIcon(extension_->id()));
 
   return prompt;
 }