Roll src/third_party/libjpeg_turbo from 2ed5319ce40b to 3963fbcd6c16

Just a trivial update to README.chromium.

Summary of changes available at:
https://chromium.googlesource.com/chromium/deps/libjpeg_turbo/+log/2ed5319ce40b..3963fbcd6c16

NOTRY=true
R=mnaganov@chromium.org
BUG=

Review URL: https://codereview.chromium.org/537973002

Cr-Commit-Position: refs/heads/master@{#293292}

DEPS

@@ -226,7 +226,7 @@ deps = {
    Var('chromium_git') + '/chromium/deps/yasm/patched-yasm.git' + '@' + 'c960eb11ccda80b10ed50be39df4f0663b371d1d',
 
   'src/third_party/libjpeg_turbo':
-   Var('chromium_git') + '/chromium/deps/libjpeg_turbo.git' + '@' + '2ed5319ce40b0ba2cd9b962713ea0ef775781e69',
+   Var('chromium_git') + '/chromium/deps/libjpeg_turbo.git' + '@' + '3963fbcd6c16965948a9c081c6e9dce82a938dad', # from svn revision 291801
 
   'src/third_party/flac':
    Var('chromium_git') + '/chromium/deps/flac.git' + '@' + '0635a091379d9677f1ddde5f2eec85d0f096f219',