Clean up naming scheme for reflection names.

Clean up naming scheme for reflection names.

BUG= http://dartbug.com/22987
R=ahe@google.com

Committed: https://code.google.com/p/dart/source/detail?r=44732

Reverted: https://code.google.com/p/dart/source/detail?r=44733

Committed: https://code.google.com/p/dart/source/detail?r=44736

[herhut, 2015-03-27 09:03:17]

Patchset #1 (id:1) has been deleted

[herhut, 2015-03-27 09:03:49]

herhut@google.com changed reviewers:
+ ahe@google.com

[ahe, 2015-03-27 12:16:10]

lgtm

[herhut, 2015-03-27 12:28:13]

Committed patchset #2 (id:40001) manually as 44732 (presubmit successful).

[herhut, 2015-03-27 14:14:54]

We have to make sure that we do not try to build a methodmirror for methods that
are not marked as reflectable, as those simply lack the reflection information. 

Before we used the reflectionname, but that did not (and still does not) take
optionality of parameters into account.

[ahe, 2015-03-27 14:41:12]

LGTM as you have promise me to create a single regression test that will prevent
others from tripping over this situation in the future.

[herhut, 2015-03-27 14:43:14]

Committed patchset #3 (id:60001) manually as 44736 (presubmit successful).