reland r57885 with a fix for linux/views.

chrome/browser/tab_contents/tab_contents_view_gtk.h

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_VIEW_GTK_H_
 #define CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_VIEW_GTK_H_
 #pragma once
 
 #include <gtk/gtk.h>
 
@@ skipping 18 matching lines @@
   // lifetime. This doesn't need to be the case, but is this way currently
   // because that's what was easiest when they were split.
   explicit TabContentsViewGtk(TabContents* tab_contents);
   virtual ~TabContentsViewGtk();
 
   // Unlike Windows, ConstrainedWindows need to collaborate with the
   // TabContentsViewGtk to position the dialogs.
   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);
   virtual RenderWidgetHostView* CreateViewForWidget(
       RenderWidgetHost* render_widget_host);
 
   virtual gfx::NativeView GetNativeView() const;
   virtual gfx::NativeView GetContentNativeView() const;
   virtual gfx::NativeWindow GetTopLevelNativeWindow() const;
   virtual void GetContainerBounds(gfx::Rect* out) const;
@@ skipping 23 matching lines @@
 
  private:
   // Insert the given widget into the content area. Should only be used for
   // web pages and the like (including interstitials and sad tab). Note that
   // this will be perfectly happy to insert overlapping render views, so care
   // should be taken that the correct one is hidden/shown.
   void InsertIntoContentArea(GtkWidget* widget);
 
   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*);
 
   // Used to adjust the size of its children when the size of |expanded_| is
   // changed.
   CHROMEGTK_CALLBACK_2(TabContentsViewGtk, void, OnChildSizeRequest,
                        GtkWidget*, GtkRequisition*);
 
   // Used to propagate the size change of |expanded_| to our RWHV to resize the
@@ skipping 38 matching lines @@
   scoped_ptr<TabContentsDragSource> drag_source_;
 
   // The size we want the tab contents view to be.  We keep this in a separate
   // variable because resizing in GTK+ is async.
   gfx::Size requested_size_;
 
   DISALLOW_COPY_AND_ASSIGN(TabContentsViewGtk);
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_VIEW_GTK_H_