Suppress bug 50484 (leaks in ProfileSync)

Suppressions are based on those generated by
http://build.chromium.org/buildbot/memory/builders/Linux%20Tests%20(valgrind)(1)/builds/5238/steps/memory%20test:%20ui/logs/stdio
http://build.chromium.org/buildbot/memory/builders/Chromium%20Mac%20UI%20(valgrind)(2)/builds/3700/steps/memory%20test:%20ui/logs/stdio
http://build.chromium.org/buildbot/memory/builders/Chromium%20OS%20UI%20(valgrind)(1)/builds/3977/steps/memory%20test:%20unit/logs/stdio
TBR=glider
BUG=50484
Review URL: http://codereview.chromium.org/3067009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@53922 0039d316-1c4b-4281-b951-d872f2087c98

tools/valgrind/memcheck/suppressions.txt

@@ -3617,3 +3617,17 @@
    fun:_ZN8syncable21DirectoryBackingStore11LoadEntriesEPSt3setIPNS_11EntryKernelENS_9LessFieldINS_15MetahandleFieldELS5_0EEESaIS3_EE
    fun:_ZN8syncable44DirectoryBackingStoreTest_DeleteEntries_Test8TestBodyEv
 }
+{
+   big_50484
+   Memcheck:Leak
+   ...
+   fun:_ZN15SyncSetupWizard*EP18ProfileSyncService
+   fun:_ZN18ProfileSyncService*
+   fun:_ZN22ProfileSync*
+   ...
+   fun:*GetProfileSyncServiceEv
+   fun:_ZN7Profile16IsSyncAccessibleEv
+   fun:_ZN7Browser31UpdateCommandsForFullscreenModeEb
+   fun:_ZN7Browser16InitCommandStateEv
+   fun:_ZN7Browser*ENS_4TypeEP7Profile
+}