Add Nullity check for instant service

chrome/browser/ui/views/location_bar/location_bar_view.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 "chrome/browser/ui/views/location_bar/location_bar_view.h"
 
 #include <algorithm>
 #include <map>
 
 #include "base/i18n/rtl.h"
@@ skipping 1256 matching lines @@
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // LocationBarView, private views::View implementation:
 
 const char* LocationBarView::GetClassName() const {
   return kViewClassName;
 }
 
 void LocationBarView::OnBoundsChanged(const gfx::Rect& previous_bounds) {
-  InstantServiceFactory::GetForProfile(profile())->OnOmniboxStartMarginChanged(
-      bounds().x());
+  InstantService* instant_service =
+      InstantServiceFactory::GetForProfile(profile());
+  if (instant_service)
+    instant_service->OnOmniboxStartMarginChanged(bounds().x());
 
   OmniboxPopupView* popup = omnibox_view_->model()->popup_model()->view();
   if (popup->IsOpen())
     popup->UpdatePopupAppearance();
 }
 
 void LocationBarView::OnFocus() {
   // Explicitly focus the omnibox so a focus ring will be displayed around it on
   // Windows.
   omnibox_view_->SetFocus();
@@ skipping 154 matching lines @@
 
 void LocationBarView::ModelChanged(const SearchModel::State& old_state,
                                    const SearchModel::State& new_state) {
   const bool visible = !GetToolbarModel()->input_in_progress() &&
       new_state.voice_search_supported;
   if (mic_search_view_->visible() != visible) {
     mic_search_view_->SetVisible(visible);
     Layout();
   }
 }