Fixed leaking data in WebThreadSafeData

Source/platform/exported/WebThreadSafeData.cpp

Index: Source/platform/exported/WebThreadSafeData.cpp
diff --git a/Source/platform/exported/WebThreadSafeData.cpp b/Source/platform/exported/WebThreadSafeData.cpp
index cafe6c1b97fff6838068c22e064d86aede1cc74e..ac968a49c15d14135eb1050e533d29f9bc1f26a9 100644
--- a/Source/platform/exported/WebThreadSafeData.cpp
+++ b/Source/platform/exported/WebThreadSafeData.cpp
@@ -37,7 +37,7 @@ namespace blink {
 
 WebThreadSafeData::WebThreadSafeData(const char* data, size_t length)
 {
-    m_private = RawData::create().leakRef();
+    m_private = RawData::create();
     m_private->mutableData()->append(data, length);
 }
 
@@ -66,7 +66,7 @@ const char* WebThreadSafeData::data() const
 }
 
 WebThreadSafeData::WebThreadSafeData(const PassRefPtr<RawData>& data)
-    : m_private(data.leakRef())
+    : m_private(data)
 {
 }