The "size-request" event is run-first, clean up the Omnibox handler.

chrome/browser/autocomplete/autocomplete_edit_view_gtk.cc

 // 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.
 
 #include "chrome/browser/autocomplete/autocomplete_edit_view_gtk.h"
 
 #include <gtk/gtk.h>
 #include <gdk/gdkkeysyms.h>
 
 #include "base/gfx/gtk_util.h"
@@ skipping 440 matching lines @@
   if (step == GTK_MOVEMENT_PAGES)
     move_amount = model_->result().size() * ((count < 0) ? -1 : 1);
   else if (step != GTK_MOVEMENT_DISPLAY_LINES)
     return;  // Propagate into GtkTextView
   model_->OnUpOrDownKeyPressed(move_amount);
   // move-cursor doesn't use a signal accumulaqtor on the return value (it
   // just ignores then), so we have to stop the propagation.
   g_signal_stop_emission_by_name(text_view_, "move-cursor");
 }
 
-gboolean AutocompleteEditViewGtk::HandleViewSizeRequest(GtkRequisition* req) {
-  // Don't force a minimum width, but use the font-relative height.
-  GTK_WIDGET_GET_CLASS(text_view_)->size_request(text_view_, req);
+void AutocompleteEditViewGtk::HandleViewSizeRequest(GtkRequisition* req) {
+  // Don't force a minimum width, but use the font-relative height.  This is a
+  // run-first handler, so the default handler was already called.
   req->width = 1;
-  return TRUE;  // We already called the default handler.
 }
 
 AutocompleteEditViewGtk::CharRange AutocompleteEditViewGtk::GetSelection() {
   // You can not just use get_selection_bounds here, since the order will be
   // ascending, and you don't know where the user's start and end of the
   // selection was (if the selection was forwards or backwards).  Get the
   // actual marks so that we can preserve the selection direction.
   GtkTextIter start, insert;
   GtkTextMark* mark;
 
@@ skipping 65 matching lines @@
       gtk_text_buffer_apply_tag(text_buffer_, insecure_scheme_tag_,
                                 &start, &end);
     }
   }
 }
 
 void AutocompleteEditViewGtk::TextChanged() {
   EmphasizeURLComponents();
   controller_->OnChanged();
 }