Attempt at fixing a FocusManager related crasher

chrome/views/view.cc

 // Copyright (c) 2006-2008 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/views/view.h"
 
 #include <algorithm>
 
 #ifndef NDEBUG
 #include <iostream>
@@ skipping 1154 matching lines @@
   }
   return ValidateFloatingViewForID(id);
 }
 
 void View::RestoreFloatingViewFocus() {
   // Clear the reference to the task as if we have been triggered by it, it will
   // soon be invalid.
   restore_focus_view_task_ = NULL;
   should_restore_focus_ = false;
 
-  GetFocusManager()->RestoreFocusedView();
+  FocusManager* focus_manager = GetFocusManager();
+  if (focus_manager)
+    focus_manager->RestoreFocusedView();
 }
 
 // static
 bool View::EnumerateFloatingViewsForInterval(int low_bound, int high_bound,
                                              bool ascending_order,
                                              FloatingViewPosition position,
                                              int starting_id,
                                              int* id) {
   DCHECK(low_bound <= high_bound);
   if (low_bound >= high_bound)
@@ skipping 408 matching lines @@
 }
 
 void View::DragInfo::PossibleDrag(int x, int y) {
   possible_drag = true;
   start_x = x;
   start_y = y;
 }
 
 }  // namespace