Remove stale suppressions (class name changed)

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 # running overnight and removing outdated bugs/suppressions.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 1995 matching lines @@
    fun:_ZN16ExtensionService4InitEv
 }
 {
    bug_40877
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN25ActiveNotificationTracker20RegisterNotificationERKN6WebKit15WebNotificationE
    fun:_ZN53ActiveNotificationTrackerTest_TestLookupAndClear_Test8TestBodyEv
 }
 {
-   bug_41186
-   Memcheck:Addr1
-   fun:_ZNK16GtkThemeProvider11UsingNativeThemeEv
-   fun:_ZN12browser_sync*14UseSystemThemeEP7Profile
-   fun:_ZN12browser_sync33GetThemeSpecificsFromCurrentThemeEP7ProfilePN7sync_pb14ThemeSpecificsE
-   fun:_ZN12browser_sync44SetCurrentThemeFromThemeSpecificsIfNecessaryERKN7sync_pb14ThemeSpecificsEP7Profile
-}
-{
    bug_42389
    Memcheck:Leak
    ...
    fun:malloc
    fun:g_malloc
    ...
    fun:gdk_pixbuf_loader_write
    fun:_ZN10IconLoader9ParseIconEv
 }
 {
@@ skipping 1184 matching lines @@
 {
    bug_63671
    Memcheck:Param
    write(buf)
    ...
    fun:_ZN9file_util9WriteFileERK8FilePathPKci
    fun:_Z24ConvertWebAppToExtensionRK18WebApplicationInfoRKN4base4TimeE
    fun:_ZN30ExtensionFromWebApp_Basic_Test8TestBodyEv
 }
 {
-   bug_63672
-   Memcheck:Addr1
-   fun:_ZNK16GtkThemeProvider11UsingNativeThemeEv
-   fun:_ZN12browser_sync67_GLOBAL__N_chrome_browser_sync_glue_theme_util.cc_00000000_1C67A97A14UseSystemThemeEP7Profile
-   fun:_ZN12browser_sync33GetThemeSpecificsFromCurrentThemeEP7ProfilePN7sync_pb14ThemeSpecificsE
-   fun:_ZN12browser_sync44SetCurrentThemeFromThemeSpecificsIfNecessaryERKN7sync_pb14ThemeSpecificsEP7Profile
-   fun:_ZN12browser_sync76_GLOBAL__N_chrome_browser_sync_glue_theme_util_unittest.cc_00000000_6D6EFF0A69ThemeUtilTest_SetCurrentThemeIfNecessaryDefaultThemeNotNecessary_Test8TestBodyEv
-}
-{
    bug_64804
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN4base16MessageLoopProxy22CreateForCurrentThreadEv
    ...
    fun:_ZN10URLFetcher4CoreC1EPS_RK4GURLNS_11RequestTypeEPNS_8DelegateE
    fun:_ZN10URLFetcherC*ERK4GURLNS_11RequestTypeEPNS_8DelegateE
 }
 {
    bug_64887_a
@@ skipping 1372 matching lines @@
 }
 {
    bug_todo_getdelim2
    Memcheck:Leak
    fun:malloc
    fun:getdelim
    obj:/lib/libselinux.so.1
    obj:/lib/libselinux.so.1
    obj:/lib/libselinux.so.1
 }