Find References needs to include closures

[stevemessick]

Selecting a function name and using "Find reference" in the menu does NOT find places where its closures are created.
Example: In the sample NewIssues select "processJson" and use menu item "Find references". This results in nothing despite its closure is created on the last line.
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Editor: 12158 (2012-09-10)
OS: Linux - amd64 (2.6.38.8-gg944)
JVM: 1.6.0-google-v4

SDK installed: true
Dartium installed: true

[stevemessick]

Set owner to @stevemessick.
Removed this from the M2 milestone.
Added this to the M1 milestone.
Added Fixed label.