Enable working tab-dragging tests on Linux

chrome/chrome_tests.gypi

Index: chrome/chrome_tests.gypi
diff --git a/chrome/chrome_tests.gypi b/chrome/chrome_tests.gypi
index eb29a2dcea934e7837204c4bd874d370afdf48dd..07b8dcc3d006af23477950b9aa6ab81a578624fb 100644
--- a/chrome/chrome_tests.gypi
+++ b/chrome/chrome_tests.gypi
@@ -183,11 +183,6 @@
         }],
         ['OS=="linux" and use_aura==1 and chromeos==0', {
           'sources!': [
-            # TODO(port): These tests fail because they don't have a Screen,
-            # but expect one.
-            # TODO(port): I have no idea about the crashes in here; there's
-            # nothing obviously wrong. It doesn't run on gtk today, either.
-            'browser/ui/views/tabs/tab_drag_controller_interactive_uitest.cc',
             # TODO(port): Everything here times out. Attempts have been made to
             # fix the individual failures, but each time I disable a test from
             # these suites, it seems like one or another starts timing out too.