[Caja] Re: Add @Nonnull and @Nullable annotations to the lexer package. (issue2864041)

[mikesamuel]

http://codereview.appspot.com/2864041/diff/1/build.xml
File build.xml (right):

http://codereview.appspot.com/2864041/diff/1/build.xml#newcode82
build.xml:82: <pathelement
path="${third_party}/java/jsr305/jsr305.jar"/>
So javax.annotations can be used in tests.

http://codereview.appspot.com/2864041/