Makes the TabStrip always have the ability to enter stacking mode on

chrome/browser/ui/views/tabs/browser_tab_strip_controller.cc

Index: chrome/browser/ui/views/tabs/browser_tab_strip_controller.cc
diff --git a/chrome/browser/ui/views/tabs/browser_tab_strip_controller.cc b/chrome/browser/ui/views/tabs/browser_tab_strip_controller.cc
index d101fc1e0e215af8dbc5420859d8d369ef7e32a6..7d346f750dbd225ccceb98ffe2f397c041cd3d71 100644
--- a/chrome/browser/ui/views/tabs/browser_tab_strip_controller.cc
+++ b/chrome/browser/ui/views/tabs/browser_tab_strip_controller.cc
@@ -59,8 +59,11 @@ TabStripLayoutType DetermineTabStripLayout(PrefService* prefs,
           switches::kEnableStackedTabStrip)) {
     return TAB_STRIP_LAYOUT_STACKED;
   }
+  // For chromeos always allow entering stacked mode.
+#if !defined(OS_CHROMEOS)
   if (ui::GetDisplayLayout() != ui::LAYOUT_TOUCH)
     return TAB_STRIP_LAYOUT_SHRINK;
+#endif
   *adjust_layout = true;
   switch (prefs->GetInteger(prefs::kTabStripLayoutType)) {
     case TAB_STRIP_LAYOUT_STACKED: