Include indexed methods to be considered for inlining by JsInliner.

JsInliner (inliner for JS AST) only looks for inlining opportunities
that were not explored by MethodInliner (inliner for Java AST). These
opportunities include the bodies of JSNI methods as well as callers of
JSNI methods.

Method calls inserted by normalization passes would not have been
considered by MethodInliner (normalization occurs after optimization) nor
by JsInliner. This patch fixes that.

Change-Id: I97dbbaefce71ac2ce0ec80d64f7f3b6815f999b2