Disable WindowAnimationsTest.LockAnimationDuration and...

Disable WindowAnimationsTest.LockAnimationDuration and WindowAnimationsTest.HideShowBrightnessGrayscaleAnimation under Dr.Memory

BUG=397478
TBR=earthdok@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/416993004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@285577 0039d316-1c4b-4281-b951-d872f2087c98

tools/valgrind/gtest_exclude/ash_unittests.gtest-drmemory_win32.txt

 # http://crbug.com/396969
 DesktopBackgroundControllerTest.*
+# http://crbug.com/397478
+WindowAnimationsTest.HideShowBrightnessGrayscaleAnimation
+WindowAnimationsTest.LockAnimationDuration
+WorkspaceControllerTest.AnimatedNormToMaxToNormRepositionsRemaining