Suppress glib/gthread leaks in component build.

tools/valgrind/memcheck/suppressions.txt

 # There are four 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 # running overnight and removing outdated bugs/suppressions.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 781 matching lines @@
 }
 {
    # Most plugins return a constant char * string, but this totem plugin
    # uses printf and allocates one.
    Ubuntu_Precise_totem_mime_desc_leak
    Memcheck:Leak
    fun:g_strdup_printf
    obj:*/libtotem-cone-plugin.so
    fun:_ZN6webkit5npapi9PluginLib17ReadWebPluginInfoERKN4base8FilePathEPNS_13WebPluginInfoE
 }
+{
+   glib/gthread malloc leak in component build
+   Memcheck:Leak
+   fun:malloc
+   ...
+   fun:g_thread_proxy
+}
+{
+   glib/gthread calloc leak in component build
+   Memcheck:Leak
+   fun:calloc
+   ...
+   fun:g_thread_proxy
+}
 
 #-----------------------------------------------------------------------
 # 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
 
 # See tools/valgrind/memcheck_analyze.py before modifying sanity tests.
 {
    Memcheck sanity test 01 (memory leak).
    Memcheck:Leak
    fun:_Zna*
@@ skipping 6242 matching lines @@
    Memcheck:Leak
    ...
    fun:_ZN10extensions51WebstoreInlineInstallerTest_DomainVerification_Test8TestBodyEv
 }
 {
    bug_233149
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN8chromeos52DeviceOAuth2TokenServiceTest_SaveEncryptedToken_Test8TestBodyEv
 }