Your change meets the bar and is auto-approved for M59. Please go ahead and merge the CL to branch 3071 manually. Please contact milestone owner if you have questions.
Owners: amineer@(Android), cmasso@(iOS), gkihumba@(ChromeOS), Abdul Syed@(Desktop)

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The following revision refers to this bug:
  https://chromium.googlesource.com/external/webrtc.git/+/2996dc5a520cbe2051d401dfce5ee4800162007f

commit 2996dc5a520cbe2051d401dfce5ee4800162007f
Author: philipel <philipel@webrtc.org>
Date: Mon May 22 12:13:22 2017

Break backwards traversal loop if we have looped around all packets in the PacketBuffer for H264 frames.

BUG= webrtc:7532 ,  chromium:724031 
R=holmer@google.com

Review-Url: https://codereview.webrtc.org/2868723003
Cr-Original-Commit-Position: refs/heads/master@{#18191}
Review-Url: https://codereview.webrtc.org/2899713002 .
Cr-Commit-Position: refs/branch-heads/59@{#12}
Cr-Branched-From: 10d095d4f743bc16f8e486e156c48a6d023b32c5-refs/heads/master@{#17657}

[modify] https://crrev.com/2996dc5a520cbe2051d401dfce5ee4800162007f/webrtc/modules/video_coding/packet_buffer.cc
[modify] https://crrev.com/2996dc5a520cbe2051d401dfce5ee4800162007f/webrtc/modules/video_coding/video_packet_buffer_unittest.cc

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