Removed duplicate items on table of contents

Removed duplicate, broken item in 'in this document' on Performance Tips (http://developer.android.com/traning/articles/perf-tips.html)

Change-Id: I499d9bb314fa471e6d2c0590f59c2f71077c00b8
Signed-off-by: Taeho Kim <jyte82@gmail.com>
Remove dependency on jniGetNonMovableArrayElements.

jniGetNonMovableArrayElements is not safe and is going to be deleted.

Change-Id: I6daae1e4ac9e01ca593cda522fdbeb774eef1eff
(cherry picked from commit 75a5038849cecf38aba72721272ff07cca09501f)
Fix whitespace issues after casts.

Change-Id: Ief3e50fbedd193e22509aac783f16ba1288908de