Roll src/third_party/libjpeg_turbo/ 2de84a43e..2a34770be (3 commits)

$ git log 2de84a43e..2a34770be --date=short --no-merges --format='%ad %ae %s'
2018-06-21 jonathan.wright Add Arm NEON implementation of h2v2_fancy_upsample
2019-05-30 jonathan.wright Add 32-byte memory alignment check for Arm NEON
2019-05-20 jonathan.wright Add memory alignment size check in jmemmgr.c

Created with:
  roll-dep src/third_party/libjpeg_turbo

Bug: 922430
Change-Id: Ibb866935b05ce493d395dcd7d545d0835febe1fc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1620641
Commit-Queue: Chris Blume <cblume@chromium.org>
Reviewed-by: Chris Blume <cblume@chromium.org>
Cr-Commit-Position: refs/heads/master@{#668573}

DEPS

@@ -1058,7 +1058,7 @@ deps = {
   },
 
   'src/third_party/libjpeg_turbo':
-    Var('chromium_git') + '/chromium/deps/libjpeg_turbo.git' + '@' + '2de84a43e683c2c3c8ff4922da16b9053f024144',
+    Var('chromium_git') + '/chromium/deps/libjpeg_turbo.git' + '@' + '2a34770be9715cfc1badff10fceba52dd393b094',
 
   'src/third_party/liblouis/src': {
       'url': Var('chromium_git') + '/external/liblouis-github.git' + '@' + '97ce1c67fccbd3668291b7e63c06161c095d49f2',