Convert tabcontentscontainer to use a vbox instead of a fixed. The

chrome/browser/gtk/tab_contents_container_gtk.h

Index: chrome/browser/gtk/tab_contents_container_gtk.h
diff --git a/chrome/browser/gtk/tab_contents_container_gtk.h b/chrome/browser/gtk/tab_contents_container_gtk.h
index 8a7a8c7ca5a7b82d6f39354e4a2da4e5fb5eb1dd..6e1ad2a47bbc90deb551391a7b41504c2937fb7c 100644
--- a/chrome/browser/gtk/tab_contents_container_gtk.h
+++ b/chrome/browser/gtk/tab_contents_container_gtk.h
@@ -58,15 +58,6 @@ class TabContentsContainerGtk : public NotificationObserver,
   // get notified.
   void TabContentsDestroyed(TabContents* contents);
 
-  // Implements our hack around a GtkFixed. The entire size of the GtkFixed is
-  // allocated to normal tab contents views, while the status bubble is
-  // informed of its parent and its parent's allocation (it makes a decision
-  // about layout later.)
-  static void OnFixedSizeAllocate(
-      GtkWidget* fixed,
-      GtkAllocation* allocation,
-      TabContentsContainerGtk* container);
-
   // Handler for |floating_|'s "set-floating-position" signal. During this
   // callback, we manually set the position of the status bubble.
   static void OnSetFloatingPosition(
@@ -87,11 +78,9 @@ class TabContentsContainerGtk : public NotificationObserver,
   // their positions manually set in OnSetFloatingPosition.
   OwnedWidgetGtk floating_;
 
-  // We insert and remove TabContents GtkWidgets into this fixed_. This should
-  // not be a GtkVBox since there were errors with timing where the vbox was
-  // horizontally split with the top half displaying the current TabContents
-  // and bottom half displaying the loading page.
-  GtkWidget* fixed_;
+  // We insert TabContentsViewGtks into this container_.  We only show one
+  // TabVontentsViewGtk at a time, so we can use a vbox or an hbox.
+  GtkWidget* container_;
 
   DISALLOW_COPY_AND_ASSIGN(TabContentsContainerGtk);
 };