Well, asm.js was a research project for a few months. During those, it was open on github, it was discussed openly on IRC (e.g. #emscripten, for example when experimental commits came in to emit asm.js-like stuff), etc. During that time, we didn't know if it would work or just be a waste of time. So no blogposts were written, because what would we write? Most research projects fail, and are not worth making an effort to mention. One just develops them in the open and sees how things go.
What are you saying we should have done differently during the early research period of asm.js? (Honest question, this situation happens all the time with new research projects - I'd love to do better next time.)
And how exactly was the non-prominence "taken advantage of"? What benefit did we get from it?
I completely agree with you about chromium (the project) being open, and yes, clearly it is far larger than v8. Also, very likely I consider v8 to be more important than the average person, since JS is my area, that is a fair point.
Still, I don't want to go all the way to saying something like "v8 is negligible". It's not. JS is the only standardized programming language available for web pages. The JS writing community is huge. People writing websites use HTML, JS and CSS, with JS being pivotal. So JS does matter quite a lot, even if v8's size is small in comparison to the rest of chromium.
Hence, v8 not being developed openly is a black mark against the openness of the chromium browser. That seems an unavoidable conclusion. But it is open to debate on the amount - is v8 more or less important - of course.
I'm not sure what you think I'm claiming about Dart, if you think the timeline in the Dart document doesn't align with anything I said?
I apologize if it seems like I'm assuming the worst about Google's motivations regarding anything. I think I was pretty careful in not talking about motivations, because I don't know them. The facts are that v8 development is not fully open. And, it is a fact that I don't understand that. Not sure how that shows I think Google is being evil or anything like that? Not is anything I said an "accusation" about Google's motivations, as again, I tried to focus on the observable facts. (Or, did you make that statement referring to something else I said - if so, what?)
I have talked to v8 people, and I have asked questions about openness and development procedures and so forth. I also file bugs regularly and interact with them on the tracker. I admire the v8 developers - they are doing an amazing job! So I'm not someone from afar that is assuming the worst. I'm someone that likes the v8 project, tries to help out, and interacts with it, while at the same time is kind of puzzled and disappointed that it isn't developed openly. And I feel that reflects poorly on chromium. That's all.