Add a null check for PermissionBubbleManager::FromWebcontents.

chrome/browser/geolocation/chrome_geolocation_permission_context.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/geolocation/chrome_geolocation_permission_context.h"
 
 #include <functional>
 #include <string>
 #include <vector>
 
@@ skipping 224 matching lines @@
     case CONTENT_SETTING_BLOCK:
       PermissionDecided(id, requesting_frame, embedder, callback, false);
       break;
     case CONTENT_SETTING_ALLOW:
       PermissionDecided(id, requesting_frame, embedder, callback, true);
       break;
     default:
       if (PermissionBubbleManager::Enabled()) {
         PermissionBubbleManager* mgr =
             PermissionBubbleManager::FromWebContents(web_contents);
-        mgr->AddRequest(new GeolocationPermissionRequest(
-                this, id, requesting_frame, user_gesture, callback,
-                profile_->GetPrefs()->GetString(prefs::kAcceptLanguages)));
+        if (mgr) {
+          mgr->AddRequest(new GeolocationPermissionRequest(
+                  this, id, requesting_frame, user_gesture, callback,
+                  profile_->GetPrefs()->GetString(prefs::kAcceptLanguages)));
+        }
       } else {
         // setting == ask. Prompt the user.
         QueueController()->CreateInfoBarRequest(
             id, requesting_frame, embedder, accept_button_label,
                 base::Bind(
                     &ChromeGeolocationPermissionContext::NotifyPermissionSet,
                 base::Unretained(this), id, requesting_frame, callback));
       }
   }
 }
@@ skipping 62 matching lines @@
 
 void ChromeGeolocationPermissionContext::CancelPendingInfobarRequest(
     const PermissionRequestID& id) {
   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
   if (shutting_down_)
     return;
 
   // TODO(gbillock): handle permission bubble cancellation.
   QueueController()->CancelInfoBarRequest(id);
 }