Disable flaky viz_content_browsertests on win 10

Currently on chromium.win/Win10 Tests x64 (dbg) the viz_content_browsertests
are timing out a lot. Affecting CQ. This disables them on that bot until we can
debug them ourselves.

TBR=dpranke@chromium.org
TEST=viz_content_browsertests

Bug: 839824
Change-Id: Ifbba13cc4ffb28baa70825aa0fff9b398ce79f7d
Reviewed-on: https://chromium-review.googlesource.com/1044226Reviewed-by: Jonathan Ross <jonross@chromium.org>
Commit-Queue: Jonathan Ross <jonross@chromium.org>
Cr-Commit-Position: refs/heads/master@{#556048}

testing/buildbot/chromium.win.json

@@ -1270,18 +1270,6 @@
         },
         "test": "content_browsertests"
       },
-      {
-        "args": [
-          "--enable-features=VizDisplayCompositor",
-          "--test-launcher-filter-file=../../testing/buildbot/filters/viz.content_browsertests.filter"
-        ],
-        "name": "viz_content_browsertests",
-        "swarming": {
-          "can_use_on_swarming_builders": true,
-          "shards": 2
-        },
-        "test": "content_browsertests"
-      },
       {
         "swarming": {
           "can_use_on_swarming_builders": true

testing/buildbot/test_suite_exceptions.pyl

@@ -3137,6 +3137,12 @@
       'Linux Tests (dbg)(1)(32)',
     ],
   },
+  'viz_content_browsertests': {
+    'remove_from': [
+      # Currently flaky timeouts on Windows 10. crbug.com/839824
+      'Win10 Tests x64 (dbg)',
+    ],
+  },
   'viz_browser_tests': {
     'remove_from': [
       # Currently too flaky on Windows.