Componentization: add toV8(void*,...) to check function overload mismatch.

Source/bindings/core/v8/ToV8.h

Index: Source/bindings/core/v8/ToV8.h
diff --git a/Source/bindings/core/v8/ToV8.h b/Source/bindings/core/v8/ToV8.h
index c5f193f827d0dd85f43ebd069bba439c2f79c9e6..7b6c0773335d821f78009a055515b389005b3961 100644
--- a/Source/bindings/core/v8/ToV8.h
+++ b/Source/bindings/core/v8/ToV8.h
@@ -237,6 +237,11 @@ inline v8::Local<v8::Value> toV8(const Vector<std::pair<String, T>>& value, v8::
     return object;
 }
 
+// Only declare toV8(void*,...) for checking function overload mismatch.
+// This toV8(void*,...) should be never used. So we will find mismatch
+// because of "unresolved external symbol".

[Yuki, 2015/05/01 04:26:42]

Could you add a following comment?

Without toV8(void*, ...), call to toV8 with T* will match with toV8(bool, ...)
if T is not a subclass of ScriptWrappable or if T is declared but not defined
(so it's not clear that T is a subclass of ScriptWrappable).  This hack helps
detect such unwanted implicit conversions from T* to bool.

[tasak, 2015/05/01 05:16:49]

Done.

+v8::Handle<v8::Value> toV8(void* value, v8::Handle<v8::Object> creationContext, v8::Isolate*);
+
 } // namespace blink
 
 #endif // ToV8_h