Marked most disabled benchmarks with the correct bugs.

tools/perf/benchmarks/media.py

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 from measurements import media
 import page_sets
 from telemetry import benchmark
 from telemetry.page import page_test
 from telemetry.value import list_of_scalar_values
 from telemetry.value import scalar
@@ skipping 15 matching lines @@
                 results.current_page, trace_name, units='ms',
                 values=[float(v) for v in metrics[m]],
                 important=True))
 
       else:
         results.AddValue(scalar.ScalarValue(
                 results.current_page, trace_name, units='ms',
                 value=float(metrics[m]), important=True))
 
 
-@benchmark.Disabled('android')
+@benchmark.Disabled('android')  # See media.android.tough_video_cases below
 class Media(benchmark.Benchmark):
   """Obtains media metrics for key user scenarios."""
   test = media.Media
   page_set = page_sets.ToughVideoCasesPageSet
 
   @classmethod
   def Name(cls):
     return 'media.tough_video_cases'
 
 
@@ skipping 67 matching lines @@
 
   @classmethod
   def Name(cls):
     return 'media.mse_cases'
 
   def CustomizeBrowserOptions(self, options):
     # Needed to allow XHR requests to return stream objects.
     options.AppendExtraBrowserArgs(
         ['--enable-experimental-web-platform-features',
          '--disable-gesture-requirement-for-media-playback'])