Linux: Make the findbar hang over the render view.

chrome/browser/gtk/tab_contents_container_gtk.h

 // Copyright (c) 2009 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_GTK_TAB_CONTENTS_CONTAINER_GTK_H_
 #define CHROME_BROWSER_GTK_TAB_CONTENTS_CONTAINER_GTK_H_
 
 #include <gtk/gtk.h>
 
 #include "base/basictypes.h"
@@ skipping 30 matching lines @@
   // Called when the RenderViewHost of the hosted TabContents has changed, e.g.
   // to show an interstitial page.
   void RenderViewHostChanged(RenderViewHost* old_host,
                              RenderViewHost* new_host);
 
   // Called when a TabContents is destroyed. This gives us a chance to clean
   // up our internal state if the TabContents is somehow destroyed before we
   // get notified.
   void TabContentsDestroyed(TabContents* contents);
 
+  // Called when |fixed_| changes sizes. Used to position the findbar.
+  static void OnSizeAllocate(GtkWidget* fixed,
+                             GtkAllocation* allocation,
+                             TabContentsContainerGtk* contents_container);
+
   // The currently visible TabContents.
   TabContents* tab_contents_;
 
   // We keep a GtkVBox which is inserted into this object's owner's GtkWidget
   // hierarchy. We then insert and remove WebContents GtkWidgets into this
   // vbox_.
   GtkWidget* vbox_;
 
+  // This GtkFixed widget helps us position the find bar.
+  GtkWidget* fixed_;
+
+  // The findbar widget. We do not own it.
+  GtkWidget* findbar_;
+
   DISALLOW_COPY_AND_ASSIGN(TabContentsContainerGtk);
 };
 
 #endif  // CHROME_BROWSER_GTK_TAB_CONTENTS_CONTAINER_GTK_H_