Suppress leak in GLSurfaceGLX::InitializeOneOff

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 # running overnight and removing outdated bugs/suppressions.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 2773 matching lines @@
 }
 {
    bug_67553
    Memcheck:Leak
    fun:_Znw*
    ...
    fun:_ZNSt3mapISs13scoped_refptrIK9ExtensionESt4lessISsESaISt4pairIKSsS3_EEEixERS7_
    fun:_ZN16ExtensionInfoMap12AddExtensionEPK9Extension
 }
 {
-   bug_68069a
+   bug_68069_a
    Memcheck:Leak
-   ...
-   fun:_ZN3gfx15PixmapGLContext11MakeCurrentEv
-   fun:_ZN3gfx15PixmapGLContext10InitializeEPNS_9GLContextE
-   fun:_ZN3gfx9GLContext24CreateOffscreenGLContextEPS0_
-   fun:*19InitializeGLContextEv
-   fun:_ZN18gpu_info_collector19CollectGraphicsInfoEP7GPUInfo
-   fun:_ZN9GpuThread4InitERKN4base4TimeE
-   fun:_Z7GpuMainRK18MainFunctionParams
-   fun:*23RunNamedProcessTypeMainERKSsRK18MainFunctionParams
+   fun:malloc
+   obj:*
+   obj:*
+   obj:*
+   obj:*
+   fun:_ZN3gfx20GetGLCoreProcAddressEPKc
+   fun:_ZN3gfx22InitializeGLBindingsGLEv
+   fun:_ZN3gfx20InitializeGLBindingsENS_16GLImplementationE
+   fun:_ZN3gfx9GLSurface16InitializeOneOffEv
 }
 {
-   bug_68069b
+   bug_68069_b
    Memcheck:Leak
    fun:malloc
-   ...
-   fun:_ZN3gfx9GLContext16InitializeOneOffEv
-   fun:_Z7GpuMainRK18MainFunctionParams
-   fun:*23RunNamedProcessTypeMainERKSsRK18MainFunctionParams
-   fun:ChromeMain
-   fun:main
+   fun:XextCreateExtension
+   obj:*
+   obj:*
+   fun:_ZN3gfx12GLSurfaceGLX16InitializeOneOffEv
+   fun:_ZN3gfx9GLSurface24InitializeOneOffInternalEv
+   fun:_ZN3gfx9GLSurface16InitializeOneOffEv
 }
 {
    bug_68553
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN3net25DiskCacheBasedSSLHostInfoC1ERKSsRKNS_9SSLConfigEPNS_12CertVerifierEPNS_9HttpCacheE
    fun:_ZN3net9HttpCache25SSLHostInfoFactoryAdaptor10GetForHostERKSsRKNS_9SSLConfigE
    fun:_ZN3net13SSLConnectJob12DoTCPConnectEv
    fun:_ZN3net13SSLConnectJob6DoLoopEi
    fun:_ZN3net13SSLConnectJob15ConnectInternalEv
@@ skipping 3026 matching lines @@
    obj:/lib/libselinux.so.1
    obj:/lib/libselinux.so.1
 }
 {
    bug_todo_grep
    Memcheck:Leak
    fun:malloc
    obj:/bin/grep
    obj:/bin/grep
 }