Structured cloning: improve DataCloneError reporting.

Source/web/WebSerializedScriptValue.cpp

Index: Source/web/WebSerializedScriptValue.cpp
diff --git a/Source/web/WebSerializedScriptValue.cpp b/Source/web/WebSerializedScriptValue.cpp
index 553bdbcfe3cfc4de6794f0f033910bb9a8dca27a..ec5a3f5dd1ea7858b3c550b4ffa81eab6baceac6 100644
--- a/Source/web/WebSerializedScriptValue.cpp
+++ b/Source/web/WebSerializedScriptValue.cpp
@@ -31,6 +31,7 @@
 #include "config.h"
 #include "WebSerializedScriptValue.h"
 
+#include "bindings/v8/ExceptionState.h"
 #include "bindings/v8/SerializedScriptValue.h"
 #include "public/platform/WebString.h"
 
@@ -45,9 +46,9 @@ WebSerializedScriptValue WebSerializedScriptValue::fromString(const WebString& s
 
 WebSerializedScriptValue WebSerializedScriptValue::serialize(v8::Handle<v8::Value> value)
 {
-    bool didThrow;
-    WebSerializedScriptValue serializedValue = SerializedScriptValue::create(value, 0, 0, didThrow, v8::Isolate::GetCurrent());
-    if (didThrow)
+    WebCore::TrackExceptionState exceptionState;
+    WebSerializedScriptValue serializedValue = SerializedScriptValue::create(value, 0, 0, exceptionState, v8::Isolate::GetCurrent());
+    if (exceptionState.hadException())
         return createInvalid();
     return serializedValue;
 }