Roll chromium_revision 6a04368..1728ddf (370362:370595)

Our valgrind script needed to be updated due to
https://chromium.googlesource.com/chromium/src/+/6a04368..1728ddf/tools/valgrind/chrome_tests.py

Change log: https://chromium.googlesource.com/chromium/src/+log/6a04368..1728ddf
Full diff: https://chromium.googlesource.com/chromium/src/+/6a04368..1728ddf

Changed dependencies:
* src/third_party/ffmpeg: https://chromium.googlesource.com/chromium/third_party/ffmpeg.git/+log/7deada1..2dc5618
* src/third_party/libsrtp: https://chromium.googlesource.com/chromium/deps/libsrtp.git/+log/ebfcc9a..9cc4f2f
* src/third_party/libvpx_new/source/libvpx: https://chromium.googlesource.com/webm/libvpx.git/+log/b520882..c0307e6
* src/tools/gyp: https://chromium.googlesource.com/external/gyp.git/+log/54b7dfc..aa0301b
DEPS diff: https://chromium.googlesource.com/chromium/src/+/6a04368..1728ddf/DEPS

No update to Clang.

TBR=marpan@webrtc.org, stefan@webrtc.org,
NOTRY=True

Review URL: https://codereview.webrtc.org/1610253003

Cr-Commit-Position: refs/heads/master@{#11330}
diff --git a/tools/valgrind-webrtc/webrtc_tests.py b/tools/valgrind-webrtc/webrtc_tests.py
index aacf497..3550b3a 100755
--- a/tools/valgrind-webrtc/webrtc_tests.py
+++ b/tools/valgrind-webrtc/webrtc_tests.py
@@ -123,6 +123,8 @@
                     help="run the tests with --test-launcher-total-shards")
   parser.add_option("--test-launcher-shard-index", type=int,
                     help="run the tests with --test-launcher-shard-index")
+  parser.add_option("--drmemory_ops",
+                    help="extra options passed to Dr. Memory")
   options, args = parser.parse_args()
 
   if options.verbose: