dartdoc should display type parameter references

[DartBot]

This issue was originally filed by @seaneagan

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Currently for generic classes and interfaces, dartdoc does not display type parameter references used in constructors / members / method parameters / return types. For example, Collection#filter is declared as:

Collection<E> filter(bool f(E element));

but the HTML generated by dartdoc only displays:

Collection filter(bool f(element));

which makes it look like filter returns a Collection<Dynamic>

[dgrove]

Set owner to @munificent.
Added Triaged label.

[anders-sandholm]

Added Area-DartDoc label.

[sethladd]

Issue #2911 has been merged into this issue.

[munificent]

Added this to the M1 milestone.

[sethladd]

Marked this as being blocked by #3414.

[kevmoo]

Dupe of http://code.google.com/p/dart/issues/detail?id=1483

...although 1483 only references return types while I agree it'd be nice to have generics everywhere.

[johnniwinther]

Fixed by http://codereview.chromium.org/10701091/

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Added Fixed label.
Marked this as being blocked by #3414.
Unmarked this as being blocked by #3414.