Propagate proper FROM_HERE to postTask() in worker code

third_party/WebKit/Source/wtf/debug/Alias.h

Index: third_party/WebKit/Source/wtf/debug/Alias.h
diff --git a/third_party/WebKit/Source/wtf/debug/CrashLogging.h b/third_party/WebKit/Source/wtf/debug/Alias.h
similarity index 55%
copy from third_party/WebKit/Source/wtf/debug/CrashLogging.h
copy to third_party/WebKit/Source/wtf/debug/Alias.h
index a4fd960edc939baf914b07eb7d9cd57e2ee2eab4..1176a1b30310bad17a381535899db29d0c1c5b44 100644
--- a/third_party/WebKit/Source/wtf/debug/CrashLogging.h
+++ b/third_party/WebKit/Source/wtf/debug/Alias.h
@@ -2,18 +2,20 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef WTF_CrashLogging_h
-#define WTF_CrashLogging_h
+#ifndef WTF_Alias_h
+#define WTF_Alias_h
 
-#include "base/debug/crash_logging.h"
-#include "wtf/WTFExport.h"
+#include "base/debug/alias.h"
 
 namespace WTF {
 namespace debug {
 
-using ScopedCrashKey = base::debug::ScopedCrashKey;
+inline void alias(const void* var)
+{
+    base::debug::Alias(var);
+}
 
 } // namespace debug
 } // namespace WTF
 
-#endif // WTF_CrashLogging_h
+#endif // WTF_Alias_h