(Reland) Add failure screenshots and images to results detail.

build/android/test_runner.py

Index: build/android/test_runner.py
diff --git a/build/android/test_runner.py b/build/android/test_runner.py
index cb2767e662415d00f49b3341f9a0109ec415c47d..de297bb4e537b728905b64d18718395289173057 100755
--- a/build/android/test_runner.py
+++ b/build/android/test_runner.py
@@ -163,6 +163,10 @@ def AddCommonOptions(parser):
       '--flakiness-dashboard-server',
       dest='flakiness_dashboard_server',
       help=argparse.SUPPRESS)
+  parser.add_argument(
+      '--gs-results-bucket',

[jbudorick, 2017/04/29 01:12:26]

It'd be nice if this was named the same thing in test_results_presentation and
here. I think --bucket is a bit to nonspecific here given the number of
arguments this has, though.

[mikecase (-- gone --), 2017/05/03 21:25:14]

Ack. Leaving as is unless you say otherwise.

+      help='Google Storage bucket to upload results to.')
+
 
   parser.add_argument(
       '--output-directory',