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After code cleanup done on issues: https://webrtc-codereview.appspot.com/34259004/ https://webrtc-codereview.appspot.com/43409004/ https://webrtc-codereview.appspot.com/34309004/ https://webrtc-codereview.appspot.com/34309004/ https://webrtc-codereview.appspot.com/36209004/ https://webrtc-codereview.appspot.com/40899004/ https://webrtc-codereview.appspot.com/39279004/ https://webrtc-codereview.appspot.com/42099005/ and the similar work done for AudioEncoderDecoderIsacT, methods AudioEncoder::Encode and AudioEncoder::EncodeInternal will always succeed. Therefore, there is no need for them to return bool value that represents success or failure. R=kwiberg@webrtc.org Review URL: https://webrtc-codereview.appspot.com/38279004 Cr-Commit-Position: refs/heads/master@{#8518} git-svn-id: http://webrtc.googlecode.com/svn/trunk@8518 4adac7df-926f-26a2-2b94-8c16560cd09d