Correctly handle extensions width in the GTK extension shelf.

chrome/browser/gtk/extension_shelf_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/gtk/extension_shelf_gtk.h"
 
 #include "chrome/browser/browser.h"
 #include "chrome/browser/gtk/browser_window_gtk.h"
 #include "chrome/browser/gtk/gtk_theme_provider.h"
 #include "chrome/browser/gtk/nine_box.h"
@@ skipping 29 matching lines @@
 
   ExtensionHost* host_;
 
   const std::string extension_name_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(Toolstrip);
 };
 
 void ExtensionShelfGtk::Toolstrip::AddToolstripToBox(GtkWidget* box) {
-  gtk_box_pack_start(GTK_BOX(box), native_view(), TRUE, TRUE,
+  gtk_box_pack_start(GTK_BOX(box), native_view(), FALSE, FALSE,
                      kToolstripPadding);
 }
 
 void ExtensionShelfGtk::Toolstrip::RemoveToolstripFromBox(GtkWidget* box) {
   gtk_container_remove(GTK_CONTAINER(box), native_view());
 }
 
 void ExtensionShelfGtk::Toolstrip::Init() {
   host_->view()->set_is_toolstrip(true);
   gtk_widget_show_all(native_view());
@@ skipping 153 matching lines @@
                   event->area.width, event->area.height);
   cairo_clip(cr);
   bar->InitBackground();
   bar->background_ninebox_->RenderTopCenterStrip(
       cr, event->area.x, event->area.y,
       event->area.x + event->area.width);
   cairo_destroy(cr);
 
   return FALSE;  // Propagate expose to children.
 }