SharedWorker: Make shared workers keyed by a pair of url and name

content/browser/shared_worker/shared_worker_instance.cc

Index: content/browser/shared_worker/shared_worker_instance.cc
diff --git a/content/browser/shared_worker/shared_worker_instance.cc b/content/browser/shared_worker/shared_worker_instance.cc
index 282cf190515772755d10bb94580bbc7512bdade5..83a631cd5da8343faf30303081f529361d9a33d4 100644
--- a/content/browser/shared_worker/shared_worker_instance.cc
+++ b/content/browser/shared_worker/shared_worker_instance.cc
@@ -57,10 +57,9 @@ bool SharedWorkerInstance::Matches(const GURL& match_url,
   if (url_.GetOrigin() != match_url.GetOrigin())
     return false;
 
-  if (name_.empty() && match_name.empty())
-    return url_ == match_url;
-
-  return name_ == match_name;
+  if (name_ != match_name || url_ != match_url)
+    return false;
+  return true;
 }
 
 bool SharedWorkerInstance::Matches(const SharedWorkerInstance& other) const {