Refactor SpecialPopupRow out of tray_views.h/cc into its own files.

ash/system/tray/tray_details_view.h

Index: ash/system/tray/tray_details_view.h
diff --git a/ash/system/tray/tray_details_view.h b/ash/system/tray/tray_details_view.h
index 3801e80fab8590b717403e1a24672847580ddb8c..073873ad0d9a190395ea9762e218af74f3272750 100644
--- a/ash/system/tray/tray_details_view.h
+++ b/ash/system/tray/tray_details_view.h
@@ -5,6 +5,7 @@
 #ifndef ASH_SYSTEM_TRAY_TRAY_DETAILS_VIEW_H_
 #define ASH_SYSTEM_TRAY_TRAY_DETAILS_VIEW_H_
 
+#include "ash/system/tray/special_popup_row.h"

[stevenjb, 2013/02/13 23:13:16]

Can we avoid this? It looks like we just need to add it to two .cc files.

[jennyz, 2013/02/13 23:36:57]

It is more convenient to include it here, otherwise, we will need to include it
in all the tray_xx.cc files where footer() is accessed in the TrayDetailsView
derived class, which are a lot(9 files).

 #include "ui/views/view.h"
 
 namespace views {
@@ -19,7 +20,6 @@ namespace internal {
 
 class FixedSizedScrollView;
 class ScrollBorder;
-class SpecialPopupRow;
 class ViewClickListener;
 
 class TrayDetailsView : public views::View {