Remove top and bottom margins from TrayBubbleView

ui/views/views.gyp

Index: ui/views/views.gyp
diff --git a/ui/views/views.gyp b/ui/views/views.gyp
index f513cb34bab1c3dee48d6464a071d24725ce5ecf..8791f5ca95f5f71cbbd6a9603f441bc66f0dfb27 100644
--- a/ui/views/views.gyp
+++ b/ui/views/views.gyp
@@ -458,10 +458,14 @@
             ['exclude', 'corewm'],
             ['exclude', '/desktop_[^/]*\\.cc$'],
             ['exclude', '/x11_[^/]*\\.cc$'],
-            ['exclude', 'widget/native_widget_aura_window_observer.cc'],
-            ['exclude', 'widget/native_widget_aura_window_observer.h'],
-            ['exclude', 'widget/widget_aura_utils.cc'],
-            ['exclude', 'widget/widget_aura_utils.h'],
+          ],
+          'sources!': [
+            'bubble/tray_bubble_view.cc',
+            'bubble/tray_bubble_view.h',
+            'widget/native_widget_aura_window_observer.cc',
+            'widget/native_widget_aura_window_observer.h',
+            'widget/widget_aura_utils.cc',
+            'widget/widget_aura_utils.h',
           ],
         }],
         ['chromeos==1', {