Roll Syzygy deps to 0.8.6.3.

DEPS

 # This file is used to manage the dependencies of the Chromium src repo. It is
 # used by gclient to determine what version of each dependency to check out, and
 # where.
 #
 # For more information, please refer to the official documentation:
 #   https://sites.google.com/a/chromium.org/dev/developers/how-tos/get-the-code
 #
 # When adding a new dependency, please update the top-level .gitignore file
 # to list the dependency's destination directory.
 #
@@ skipping 700 matching lines @@
                 '-s', 'src/third_party/drmemory/drmemory-windows-sfx.exe.sha1',
               ],
   },
   # Pull the Syzygy binaries, used for optimization and instrumentation.
   {
     'name': 'syzygy-binaries',
     'pattern': '.',
     'action': ['python',
                'src/build/get_syzygy_binaries.py',
                '--output-dir=src/third_party/syzygy/binaries',
-               '--revision=ef04c12a22ec5847dea89b93920b392d8bd136fd',
+               '--revision=e869aa03e0f40f74321a70d6d4578f5bbbc29bda',
                '--overwrite',
     ],
   },
   {
     'name': 'kasko',
     'pattern': '.',
     'action': ['python',
                'src/build/get_syzygy_binaries.py',
                '--output-dir=src/third_party/kasko',
                '--revision=3278b959bdf6c9aa4b326a38e8b953e566c1ec58',
@@ skipping 48 matching lines @@
     # corresponding .py files have already been deleted.
     'name': 'remove_stale_pyc_files',
     'pattern': 'src/tools/.*\\.py',
     'action': [
         'python',
         'src/tools/remove_stale_pyc_files.py',
         'src/tools',
     ],
   },
 ]