Roll syzygy binaries to 0.8.15.0.

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 771 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=83261eadef4d3a6ac2e2b325a39e62c27b283aca',
+               '--revision=e6784a6b60fa2449a3cabb8ede9c6b98ef902c06',
                '--overwrite',
     ],
   },
   # TODO(pmonette): Move include files out of binaries folder.
   {
     'name': 'kasko',
     'pattern': '.',
     'action': ['python',
                'src/build/get_syzygy_binaries.py',
                '--output-dir=src/third_party/kasko/binaries',
@@ skipping 36 matching lines @@
     'pattern': '\\.sha1',
     'action': ['python', 'src/third_party/instrumented_libraries/scripts/download_binaries.py'],
   },
   {
     # A change to a .gyp, .gypi, or to GYP itself should run the generator.
     'name': 'gyp',
     'pattern': '.',
     'action': ['python', 'src/build/gyp_chromium'],
   },
 ]