Roll src/third_party/trace-viewer e2b5374:473c6c4

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 114 matching lines @@
   'src/third_party/angle':
    Var('chromium_git') + '/angle/angle.git' + '@' +  Var('angle_revision'),
 
   'src/third_party/colorama/src':
    Var('chromium_git') + '/external/colorama.git' + '@' + '799604a1041e9b3bc5d2789ecbd7e8db2e18e6b8',
 
   'src/third_party/crashpad/crashpad':
    Var('chromium_git') + '/crashpad/crashpad.git' + '@' + '00c42ae7bdcf40d15c02b87e088c1eb565a51333',
 
   'src/third_party/trace-viewer':
-   Var('chromium_git') + '/external/trace-viewer.git' + '@' + 'e2b5374c4941c450b168d4c7d9110fb91b2d4c19',
+   Var('chromium_git') + '/external/trace-viewer.git' + '@' + '473c6c4e8722676153d3449c67094aa55d6f6799',
 
   'src/third_party/WebKit':
    Var('chromium_git') + '/chromium/blink.git' + '@' +  Var('webkit_revision'),
 
   'src/third_party/icu':
    Var('chromium_git') + '/chromium/deps/icu.git' + '@' + '5788e2736b3bc642994b6351a6096124895afa01',
 
   'src/third_party/libexif/sources':
    Var('chromium_git') + '/chromium/deps/libexif/sources.git' + '@' + 'ed98343daabd7b4497f97fda972e132e6877c48a',
 
@@ skipping 611 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',
     ],
   },
 ]