[ABANDONED] Add exception handling options to V8StringResource<T>::prepare.

Source/bindings/v8/V8BindingMacros.h

Index: Source/bindings/v8/V8BindingMacros.h
diff --git a/Source/bindings/v8/V8BindingMacros.h b/Source/bindings/v8/V8BindingMacros.h
index e5841c9beda84810daf9ed7ea80f01cb7aca48cd..8163666cee2bfee12653c72f4d49ba6db0244477 100644
--- a/Source/bindings/v8/V8BindingMacros.h
+++ b/Source/bindings/v8/V8BindingMacros.h
@@ -93,14 +93,16 @@ namespace WebCore {
 // type is an instance of class template V8StringResource<>,
 // but Mode argument varies; using type (not Mode) for consistency
 // with other macros and ease of code generation
-#define TOSTRING_VOID(type, var, value) \
-    type var(value);                    \
-    if (UNLIKELY(!var.prepare()))       \
+// Because V8StringResourceToString<Rethrow>::call does not use the instance
+// object, we can pass null pointer to |var.init|.
+#define TOSTRING_VOID(type, var, value)                           \
+    type var(value);                                              \
+    if (UNLIKELY(!var.init<V8StringResourceRethrowException>(0))) \
         return;
 
-#define TOSTRING_DEFAULT(type, var, value, retVal) \
-    type var(value);                               \
-    if (UNLIKELY(!var.prepare()))                  \
+#define TOSTRING_DEFAULT(type, var, value, retVal)                \
+    type var(value);                                              \
+    if (UNLIKELY(!var.init<V8StringResourceRethrowException>(0))) \
         return retVal;
 
 } // namespace WebCore