1f8eddcc21
This does away with the expensive call to `computeDocumentationComment` in favor of cached comments. Notably this makes adding doc content to code completion proposals performant (and so is done here). It should also make `dartdoc` *much* faster for doc generation since there are no more trips to disk to fetch comments for elements (still needed for source though). For more on the desire for docs in completions see here: https://github.com/dart-lang/sdk/issues/23694 R=brianwilkerson@google.com, scheglov@google.com Review URL: https://codereview.chromium.org/1534043002 .