Print Preview: Fixing crash when hitting tab multiple times.

BUG=104478
TEST=Hit tab mulitple times, browser should not crash, focus should cycle through printing options.


Review URL: http://codereview.chromium.org/8578010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@110396 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/tab_contents/tab_contents_view_gtk.cc

@@ -269,9 +269,11 @@ void TabContentsViewGtk::GotFocus() {
   // all subclasses. http://crbug.com/21875
 }
 
-// This is called when we the renderer asks us to take focus back (i.e., it has
+// This is called when the renderer asks us to take focus back (i.e., it has
 // iterated past the last focusable element on the page).
 void TabContentsViewGtk::TakeFocus(bool reverse) {
+  if (!tab_contents_->delegate())
+    return;
   if (!tab_contents_->delegate()->TakeFocus(reverse)) {
     gtk_widget_child_focus(GTK_WIDGET(GetTopLevelNativeWindow()),
         reverse ? GTK_DIR_TAB_BACKWARD : GTK_DIR_TAB_FORWARD);