[content shell] W3C SVG tests need to run in a smaller window

content/shell/shell_gtk.cc

 // Copyright (c) 2012 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 "content/shell/shell.h"
 
 #include <gdk/gdkkeysyms.h>
 #include <gtk/gtk.h>
 
 #include "base/logging.h"
@@ skipping 257 matching lines @@
                                       GObject* acceleratable,
                                       guint keyval,
                                       GdkModifierType modifier) {
   ShellBrowserContext* browser_context =
       static_cast<ShellContentBrowserClient*>(
         GetContentClient()->browser())->browser_context();
   Shell::CreateNewWindow(browser_context,
                          GURL(),
                          NULL,
                          MSG_ROUTING_NONE,
-                         NULL);
+                         gfx::Size());
   return TRUE;
 }
 
 gboolean Shell::OnHighlightURLView(GtkAccelGroup* accel_group,
                                    GObject* acceleratable,
                                    guint keyval,
                                    GdkModifierType modifier) {
   gtk_widget_grab_focus(GTK_WIDGET(url_edit_view_));
   return TRUE;
 }
 
 void Shell::PlatformSetTitle(const string16& title) {
   if (headless_)
     return;
 
   std::string title_utf8 = UTF16ToUTF8(title);
   gtk_window_set_title(GTK_WINDOW(window_), title_utf8.c_str());
 }
 
 }  // namespace content