Add suppressions for two valgrind regressions

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 # running overnight and removing outdated bugs/suppressions.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 4585 matching lines @@
    ...
    fun:_ZN6icu_4612RegexMatcher12MatchChunkAtEiaR10UErrorCode
    fun:_ZN6icu_4612RegexMatcher7matchesExR10UErrorCode
    fun:_ZNK20IcuRegularExpression5MatchEPKcbPSs
    fun:_ZN4i18n12phonenumbers15PhoneNumberUtil19IsViablePhoneNumberERKSs
    fun:_ZNK4i18n12phonenumbers15PhoneNumberUtil11ParseHelperERKSsS3_bbPNS0_11PhoneNumberE
    fun:_ZNK4i18n12phonenumbers15PhoneNumberUtil5ParseERKSsS3_PNS0_11PhoneNumberE
    fun:_ZN13autofill_i18n17PhoneNumbersMatchERKSbItN4base20string16_char_traitsESaItEES5_RKSs
    fun:_ZN42PhoneNumberI18NTest_PhoneNumbersMatch_Test8TestBodyEv
 }
+{
+   bug_82183a
+   Memcheck:Cond
+   ...
+   fun:_ZN6icu_4612RegexMatcher12MatchChunkAtEiaR10UErrorCode
+   fun:_ZN6icu_4612RegexMatcher7matchesExR10UErrorCode
+   fun:_ZNK20IcuRegularExpression5MatchEPKcbPSs
+   fun:_ZN4i18n12phonenumbers15PhoneNumberUtil19IsViablePhoneNumberERKSs
+}
+{
+   bug_82183b
+   Memcheck:Value4
+   ...
+   fun:_ZN6icu_4612RegexMatcher12MatchChunkAtEiaR10UErrorCode
+   fun:_ZN6icu_4612RegexMatcher7matchesExR10UErrorCode
+   fun:_ZNK20IcuRegularExpression5MatchEPKcbPSs
+   fun:_ZN4i18n12phonenumbers15PhoneNumberUtil19IsViablePhoneNumberERKSs
+}
+{
+   bug_82186
+   Memcheck:Leak
+   fun:_Znw*
+   fun:_ZN13BookmarkModel30CreateRootNodeFromStarredEntryERKN7history12StarredEntryE
+}
 #-----------------------------------------------------------------------
 # These only occur on our Google workstations
 {
    bug_todo_freeres
    Memcheck:Free
    fun:free
    fun:__libc_freeres
    fun:_vgnU_freeres
    fun:_Exit
    fun:exit
 }
 {
    bug_todo_getdelim
    Memcheck:Leak
    fun:malloc
    fun:getdelim
    ...
    fun:call_init
    fun:_dl_init
 }