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

chrome/browser/autocomplete/autocomplete_edit_view_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_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_GTK_H_
 #define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_GTK_H_
 
 #include <gtk/gtk.h>
 
 #include "base/basictypes.h"
@@ skipping 142 matching lines @@
                                         gint count,
                                         gboolean extend_selection,
                                         gpointer self) {
     reinterpret_cast<AutocompleteEditViewGtk*>(self)->
         HandleViewMoveCursor(step, count, extend_selection);
   }
   void HandleViewMoveCursor(GtkMovementStep step,
                             gint count,
                             gboolean extendion_selection);
 
-  static gboolean HandleViewSizeRequestThunk(GtkWidget* view,
-                                             GtkRequisition* req,
-                                             gpointer self) {
-    return reinterpret_cast<AutocompleteEditViewGtk*>(self)->
+  static void HandleViewSizeRequestThunk(GtkWidget* view,
+                                         GtkRequisition* req,
+                                         gpointer self) {
+    reinterpret_cast<AutocompleteEditViewGtk*>(self)->
         HandleViewSizeRequest(req);
   }
-  gboolean HandleViewSizeRequest(GtkRequisition* req);
+  void HandleViewSizeRequest(GtkRequisition* req);
 
   // Get the character indices of the current selection.  This honors
   // direction, cp_max is the insertion point, and cp_min is the bound.
   CharRange GetSelection();
 
   // Translate from character positions to iterators for the current buffer.
   void ItersFromCharRange(const CharRange& range,
                           GtkTextIter* iter_min,
                           GtkTextIter* iter_max);
 
@@ skipping 36 matching lines @@
   ToolbarModel::SecurityLevel scheme_security_level_;
 
   // Tracking state before and after a possible change.
   std::wstring text_before_change_;
   CharRange sel_before_change_;
 
   DISALLOW_COPY_AND_ASSIGN(AutocompleteEditViewGtk);
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_GTK_H_