Unfork MessagePort.cpp by postponing the entanglement of the message port JavaScript wrappers to GC time.

This have the drawback that message ports are "re-entangled/re-unentangled" for each GC which happens. This will most likely not make any noticable difference.
Review URL: http://codereview.chromium.org/14150

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@7053 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 0 insertions, 31 deletions

diff --git a/webkit/port/bindings/v8/ScriptController.cpp b/webkit/port/bindings/v8/ScriptController.cpp
index 1e4ffe4..99e35aa3 100644
--- a/webkit/port/bindings/v8/ScriptController.cpp
+++ b/webkit/port/bindings/v8/ScriptController.cpp
@@ -107,37 +107,6 @@ void ScriptController::gcUnprotectJSWrapper(void* dom_object)
     V8Proxy::GCUnprotect(dom_object);
 }
 
-void ScriptController::entangleMessagePorts(MessagePort *port1,
-                                            MessagePort *port2)
-{
-    // When two message ports are entangled make sure that the two wrappers are
-    // also entangled. If one of the ports has pending activity it's wrapper
-    // will be protected from beeing GC'ed and by entangeling the wrappers the
-    // wrapper for the entangled port will also be protected.
-    v8::Handle<v8::Value> port1_wrapper =
-      V8Proxy::ToV8Object(V8ClassIndex::MESSAGEPORT, port1);
-    v8::Handle<v8::Value> port2_wrapper =
-      V8Proxy::ToV8Object(V8ClassIndex::MESSAGEPORT, port2);
-    ASSERT(port1_wrapper->IsObject());
-    v8::Handle<v8::Object>::Cast(port1_wrapper)->SetInternalField(
-        V8Custom::kMessagePortEntangledPortIndex, port2_wrapper);
-    ASSERT(port2_wrapper->IsObject());
-    v8::Handle<v8::Object>::Cast(port2_wrapper)->SetInternalField(
-        V8Custom::kMessagePortEntangledPortIndex, port1_wrapper);
-}
-
-void ScriptController::unentangleMessagePort(MessagePort *port)
-{
-    // Remove the wrapper entanglement when a port is unentangled.
-    if (V8Proxy::DOMObjectHasJSWrapper(port)) {
-        v8::Handle<v8::Value> wrapper =
-            V8Proxy::ToV8Object(V8ClassIndex::MESSAGEPORT, port);
-        ASSERT(wrapper->IsObject());
-        v8::Handle<v8::Object>::Cast(wrapper)->SetInternalField(
-            V8Custom::kMessagePortEntangledPortIndex, v8::Undefined());
-    }
-}
-
 ScriptController::ScriptController(Frame* frame)
     : m_frame(frame)
     , m_sourceURL(0)