Revert of Remove Platform::current checks from Mojo's error handlers in geolocation

third_party/WebKit/Source/modules/geolocation/Geolocation.cpp

 /*
  * Copyright (C) 2008, 2009, 2010, 2011 Apple Inc. All Rights Reserved.
  * Copyright (C) 2009 Torch Mobile, Inc.
  * Copyright 2010, The Android Open Source Project
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 508 matching lines @@
         queryNextPosition();
 }
 
 void Geolocation::pageVisibilityChanged()
 {
     updateGeolocationServiceConnection();
 }
 
 void Geolocation::onGeolocationConnectionError()
 {
+    // If a request is outstanding at process shutdown, this error handler will
+    // be called. In that case, blink has already shut down so do nothing.
+    //
+    // TODO(sammc): Remove this once renderer shutdown is no longer graceful.
+    if (!Platform::current())
+        return;
+
     PositionError* error = PositionError::create(PositionError::kPositionUnavailable, failedToStartServiceErrorMessage);
     error->setIsFatal(true);
     handleError(error);
 }
 
 void Geolocation::onPermissionConnectionError()
 {
+    // If a request is outstanding at process shutdown, this error handler will
+    // be called. In that case, blink has already shut down so do nothing.
+    //
+    // TODO(sammc): Remove this once renderer shutdown is no longer graceful.
+    if (!Platform::current())
+        return;
+
     onGeolocationPermissionUpdated(mojom::blink::PermissionStatus::DENIED);
 }
 
 } // namespace blink