linux_aura: Theoretical crash for full screen transition.

chrome/browser/ui/views/frame/opaque_browser_frame_view_layout.cc

 // Copyright 2013 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/ui/views/frame/opaque_browser_frame_view_layout.h"
 
 #include "base/command_line.h"
 #include "chrome/browser/profiles/profiles_state.h"
 #include "chrome/browser/ui/views/profiles/avatar_label.h"
 #include "chrome/browser/ui/views/profiles/avatar_menu_button.h"
@@ skipping 295 matching lines @@
            buttons_not_shown.begin(); it != buttons_not_shown.end(); ++it) {
     HideButton(*it);
   }
 }
 
 void OpaqueBrowserFrameViewLayout::LayoutTitleBar(views::View* host) {
   bool use_hidden_icon_location = true;
 
   int size = delegate_->GetIconSize();
   int frame_thickness = FrameBorderThickness(false);
-  bool should_show_icon = delegate_->ShouldShowWindowIcon();
-  bool should_show_title = delegate_->ShouldShowWindowTitle();
+  bool should_show_icon = delegate_->ShouldShowWindowIcon() && window_icon_;
+  bool should_show_title = delegate_->ShouldShowWindowTitle() && window_title_;
 
   if (should_show_icon || should_show_title) {
     use_hidden_icon_location = false;
 
     // Our frame border has a different "3D look" than Windows'.  Theirs has
     // a more complex gradient on the top that they push their icon/title
     // below; then the maximized window cuts this off and the icon/title are
     // centered in the remaining space.  Because the apparent shape of our
     // border is simpler, using the same positioning makes things look
     // slightly uncentered with restored windows, so when the window is
@@ skipping 357 matching lines @@
 
 void OpaqueBrowserFrameViewLayout::ViewAdded(views::View* host,
                                              views::View* view) {
   SetView(view->id(), view);
 }
 
 void OpaqueBrowserFrameViewLayout::ViewRemoved(views::View* host,
                                                views::View* view) {
   SetView(view->id(), NULL);
 }