Remove a bunch of dead files after the win aura switch.

chrome/browser/ui/views/dropdown_bar_host.h

Index: chrome/browser/ui/views/dropdown_bar_host.h
===================================================================
--- chrome/browser/ui/views/dropdown_bar_host.h	(revision 244941)
+++ chrome/browser/ui/views/dropdown_bar_host.h	(working copy)
@@ -34,11 +34,10 @@
 ////////////////////////////////////////////////////////////////////////////////
 //
 // The DropdownBarHost implements the container widget for the UI that
-// is shown at the top of browser contents. It uses the appropriate
-// implementation from dropdown_bar_host_win.cc or dropdown_bar_host_aura.cc to
-// draw its content and is responsible for showing, hiding, animating, closing,
-// and moving the bar if needed, for example if the widget is
-// obscuring the selection results in FindBar.
+// is shown at the top of browser contents. It uses the implementation from
+// dropdown_bar_host_aura.cc to draw its content and is responsible for showing,
+// hiding, animating, closing, and moving the bar if needed, for example if the
+// widget is obscuring the selection results in FindBar.
 //
 ////////////////////////////////////////////////////////////////////////////////
 class DropdownBarHost : public ui::AcceleratorTarget,