reland r57885 with a fix for linux/views.

chrome/browser/tab_contents/tab_contents_view_gtk.h

Index: chrome/browser/tab_contents/tab_contents_view_gtk.h
diff --git a/chrome/browser/tab_contents/tab_contents_view_gtk.h b/chrome/browser/tab_contents/tab_contents_view_gtk.h
index e99321d7239268380c70bcb7f7eb0c87f3c43b8a..990ee81b08463545e5ae73c4f274b9b68e236707 100644
--- a/chrome/browser/tab_contents/tab_contents_view_gtk.h
+++ b/chrome/browser/tab_contents/tab_contents_view_gtk.h
@@ -36,6 +36,10 @@ class TabContentsViewGtk : public TabContentsView,
   void AttachConstrainedWindow(ConstrainedWindowGtk* constrained_window);
   void RemoveConstrainedWindow(ConstrainedWindowGtk* constrained_window);
 
+  // Override the stored focus widget. This call only makes sense when the
+  // tab contents is not focused.
+  void SetFocusedWidget(GtkWidget* widget);
+
   // TabContentsView implementation --------------------------------------------
 
   virtual void CreateView(const gfx::Size& initial_size);
@@ -79,6 +83,9 @@ class TabContentsViewGtk : public TabContentsView,
 
   void CancelDragIfAny();
 
+  // Handle focus traversal on the render widget native view.
+  CHROMEGTK_CALLBACK_1(TabContentsViewGtk, gboolean, OnFocus, GtkDirectionType);
+
   // We keep track of the timestamp of the latest mousedown event.
   CHROMEGTK_CALLBACK_1(TabContentsViewGtk, gboolean, OnMouseDown,
                        GdkEventButton*);