Reland: Linux (nss) implementations of RSAPrivateKey and SignatureCreator

tools/valgrind/memcheck/suppressions.txt

 # There are three 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 # running overnight and removing outdated bugs/suppressions.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 269 matching lines @@
    fun:g_object_run_dispose
    fun:gtk_object_destroy
 }
 {
    # Totem plugin leaks when we load it.
    bug_21326
    Memcheck:Leak
    ...
    fun:_ZN5NPAPI9PluginLib17ReadWebPluginInfoERK8FilePathP13WebPluginInfo
 }
-
+{
+   # NSS bug https://bugzilla.mozilla.org/show_bug.cgi?id=518443
+   https://bugzilla.mozilla.org/show_bug.cgi?id=518443
+   Memcheck:Leak
+   fun:calloc
+   fun:PR_Calloc
+   fun:PORT_ZAlloc_Util
+   fun:PORT_NewArena_Util
+   fun:PK11_ImportAndReturnPrivateKey
+}
 #-----------------------------------------------------------------------
 # 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
 
 {
    logging::InitLogging never frees filename. It would be hard to free properly.
    Memcheck:Leak
    ...
    fun:_ZN7logging11InitLoggingEPKcNS_18LoggingDestinationENS_15LogLockingStateENS_20OldFileDeletionStateE
 }
@@ skipping 959 matching lines @@
    fun:_ZN11PrefService13SerializeDataEPSs
    fun:_ZN11PrefService19SavePersistentPrefsEv
    fun:_ZN16browser_shutdown8ShutdownEv
 }
 {
    bug_22702
    Memcheck:Cond
    fun:_ZN7WebCore23V8AbstractEventListener18invokeEventHandlerEN2v86HandleINS1_7ContextEEEPNS_5EventENS2_INS1_5ValueEEEb
    fun:_ZN7WebCore23V8AbstractEventListener11handleEventEPNS_5EventEb
 }