Make experimental app list use short names for app search results.

This CL makes the app list search results use the short names of apps
to be consistent with the name shown in the apps grid view.

BUG=456961

Review URL: https://codereview.chromium.org/918443002

Cr-Commit-Position: refs/heads/master@{#317006}

chrome/browser/ui/app_list/search/app_search_provider.cc

@@ -32,7 +32,7 @@ class AppSearchProvider::App {
   explicit App(const extensions::Extension* extension,
                const base::Time& last_launch_time)
       : app_id_(extension->id()),
-        indexed_name_(base::UTF8ToUTF16(extension->name())),
+        indexed_name_(base::UTF8ToUTF16(extension->short_name())),
         last_launch_time_(last_launch_time) {}
   ~App() {}