Add more EncryptedMediaTests to SingleProcessMash browser_tests filter file

Bug: 880584
Change-Id: I6272bf7e5b99353a0b0b4f8e944747da7b83c944
Reviewed-on: https://chromium-review.googlesource.com/1214177Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Ryan Cui <rcui@chromium.org>
Cr-Commit-Position: refs/heads/master@{#589708}

testing/buildbot/filters/chromeos.single_process_mash.browser_tests.filter

@@ -166,6 +166,9 @@
 # Encrypted media tests are flaky due to race condition. crbug.com/880584
 -ECKEncryptedMediaTest.*
 -EncryptedMediaTest.*
+-CDM_9/ECKEncryptedMediaTest.*
+-CDM_10/ECKEncryptedMediaTest.*
+-CDM_11/ECKEncryptedMediaTest.*
 -MSE_ClearKey/EncryptedMediaTest.*
 -MSE_ExternalClearKey/EncryptedMediaTest.*
 -MSE_Widevine/EncryptedMediaTest.*
@@ -186,7 +189,6 @@
 -ManagedWithoutPermission/ManagedWithoutPermissionPlatformKeysTest.*
 -ManagedWithPermission/ManagedWithPermissionPlatformKeysTest.*
 
-
 # Full screen button tests.
 -PresentationReceiverWindowViewBrowserTest.ChromeOSHardwareFullscreenButton