
Explicitly set the return type of Disposable.dispose to void.

A recent change to this method) appears to have confused
JavaScriptCompiler's type inference.  This fix explicitly sets the
return type to void.

R=nicksantos
DELTA=2  (2 added, 0 deleted, 0 changed)


Revision created by MOE tool push_codebase.
MOE_MIGRATION=416


git-svn-id: 35241bd708fe29f1f6c7a4322d322e99ff93b95e@679 0b95b8e8-c90f-11de-9d4f-f947ee5921c8

johan/closure-library,johan/closure-library,johan/closure-library