Linux: Make the findbar hang over the render view.

chrome/browser/gtk/tab_contents_container_gtk.h

Index: chrome/browser/gtk/tab_contents_container_gtk.h
===================================================================
--- chrome/browser/gtk/tab_contents_container_gtk.h	(revision 14624)
+++ chrome/browser/gtk/tab_contents_container_gtk.h	(working copy)
@@ -48,6 +48,11 @@
   // 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_;
 
@@ -56,6 +61,12 @@
   // 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);
 };