Suppresses the leak for Bug 53044.

TBR=timurrrr
BUG=53044
TEST=make the "Linux Tests (valgrind)(1)" bot green.
Review URL: http://codereview.chromium.org/3134025

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@57024 0039d316-1c4b-4281-b951-d872f2087c98

tools/valgrind/memcheck/suppressions.txt

@@ -4221,3 +4221,10 @@
    fun:_ZN3IPC16MessageWithTupleI6Tuple1IiEE8DispatchI9GpuThreadMS5_FviEEEbPKNS_7MessageEPT_T0_
    fun:_ZN9GpuThread24OnControlMessageReceivedERKN3IPC7MessageE
 }
+{
+   bug_53044
+   Memcheck:Leak
+   fun:malloc
+   ...
+   fun:_ZN24mozilla_security_manager19nsPKCS12Blob_ImportEPKcjRKSbItN4base20string16_char_traitsESaItEE
+}