Add OVERRIDE to chrome/browser/chromeos/.

chrome/browser/chromeos/panels/panel_scroller_header.h

Index: chrome/browser/chromeos/panels/panel_scroller_header.h
diff --git a/chrome/browser/chromeos/panels/panel_scroller_header.h b/chrome/browser/chromeos/panels/panel_scroller_header.h
index f00f3ffac959885a3b154613c0d44c0efaf7b55f..de2c6821868326aab7819f79671799d103da4b93 100644
--- a/chrome/browser/chromeos/panels/panel_scroller_header.h
+++ b/chrome/browser/chromeos/panels/panel_scroller_header.h
@@ -7,6 +7,7 @@
 #pragma once
 
 #include "base/basictypes.h"
+#include "base/compiler_specific.h"
 #include "base/string16.h"
 #include "views/view.h"
 
@@ -24,8 +25,8 @@ class PanelScrollerHeader : public views::View {
   virtual bool OnMouseDragged(const views::MouseEvent& event) OVERRIDE;
   virtual void OnMouseReleased(const views::MouseEvent& event) OVERRIDE;
   virtual void OnMouseCaptureLost() OVERRIDE;
-  virtual gfx::Size GetPreferredSize();
-  virtual void OnPaint(gfx::Canvas* canvas);
+  virtual gfx::Size GetPreferredSize() OVERRIDE;
+  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
 
  private:
   // Non-owning pointer to our parent scroller object.