Change the return type of WTF::bind() to |OwnPtr<Function>|

Source/core/html/parser/HTMLParserThread.cpp

Index: Source/core/html/parser/HTMLParserThread.cpp
diff --git a/Source/core/html/parser/HTMLParserThread.cpp b/Source/core/html/parser/HTMLParserThread.cpp
index 865a2341da754d90651b5546b75ba4f96c3d855b..b307c1c48373c044df7db096d81ca10b26e14795 100644
--- a/Source/core/html/parser/HTMLParserThread.cpp
+++ b/Source/core/html/parser/HTMLParserThread.cpp
@@ -94,7 +94,7 @@ bool HTMLParserThread::isRunning()
     return !!m_thread;
 }
 
-void HTMLParserThread::postTask(const Closure& closure)
+void HTMLParserThread::postTask(PassOwnPtr<Closure> closure)
 {
     platformThread().postTask(new Task(closure));
 }