Updating suppression for 101853

tools/valgrind/tsan/suppressions.txt

 # There are a few kinds of suppressions in this file.
 # 1. third party stuff we have no control over
 #
 # 2. intentional unit test errors, or stuff that is somehow a false positive
 # in our own code, or stuff that is so trivial it's not worth fixing
 #
 # 3. Suppressions for real chromium bugs that are not yet fixed.
 # These should all be in chromium's bug tracking system (but a few aren't yet).
 # Periodically we should sweep this file and the bug tracker clean by
 # running overnight and removing outdated bugs/suppressions.
@@ skipping 603 matching lines @@
    fun:media::CompositeFilter::SerialCallback
 }
 {
   bug_100020
   ThreadSanitizer:Race
   fun:linked_ptr_internal::join
   fun:linked_ptr::copy
   ...
   fun:HostContentSettingsMap::GetDefaultContentSetting
 }
+{
+   bug_101853_a
+   ThreadSanitizer:Race
+   fun:disk_cache::BackendImpl::DecreaseNumEntries
+   fun:disk_cache::BackendImpl::DestroyInvalidEntry
+   fun:disk_cache::BackendImpl::MatchEntry
+   fun:disk_cache::BackendImpl::InternalDoomEntry
+}
+{
+  bug_101853_b
+  ThreadSanitizer:Race
+  fun:disk_cache::BackendImpl::GetEntryCount
+  fun:DiskCacheBackendTest::BackendTrimInvalidEntry2
+  fun:DiskCacheBackendTest_TrimInvalidEntry2_Test::TestBody
+}