[Sheriff] Disabled tests with consistent failures on Win7.

Bug: 1084931
Change-Id: I4c1c31698b7877d3fa8d71765768f8a0b11d1282
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2212804Reviewed-by: Bruce Dawson <brucedawson@chromium.org>
Commit-Queue: Ramya Nagarajan <ramyan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#771221}

tools/perf/core/minidump_unittest.py

@@ -34,8 +34,12 @@ class BrowserMinidumpTest(tab_test_case.TabTestCase):
   # Minidump symbolization doesn't work in ChromeOS local mode if the rootfs is
   # still read-only, so skip the test in that case.
   # TODO(crbug.com/1038043): Test is failing on chromeos-betty-chrome.
-  @decorators.Disabled('chromeos-local', 'chromeos-board-betty',
-                       'chromeos-board-betty-pi-arc')
+  @decorators.Disabled(
+      'chromeos-local',
+      'chromeos-board-betty',
+      'chromeos-board-betty-pi-arc',
+      'win'  # https://crbug.com/1084931
+  )
   def testSymbolizeMinidump(self):
     # Wait for the browser to restart fully before crashing
     self._LoadPageThenWait('var sam = "car";', 'sam')
@@ -78,8 +82,12 @@ class BrowserMinidumpTest(tab_test_case.TabTestCase):
   # Minidump symbolization doesn't work in ChromeOS local mode if the rootfs is
   # still read-only, so skip the test in that case.
   # TODO(crbug.com/1038043): Test is failing on chromeos-betty-chrome.
-  @decorators.Disabled('chromeos-local', 'chromeos-board-betty',
-                       'chromeos-board-betty-pi-arc')
+  @decorators.Disabled(
+      'chromeos-local',
+      'chromeos-board-betty',
+      'chromeos-board-betty-pi-arc',
+      'win'  # https://crbug.com/1084931
+  )
   def testMultipleCrashMinidumps(self):
     # Wait for the browser to restart fully before crashing
     self._LoadPageThenWait('var cat = "dog";', 'cat')