Remove valgrind suppression for BrowserWindowGtk::ConnectAccelerators().

tools/valgrind/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 # running overnight and removing outdated bugs/suppressions.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 405 matching lines @@
 }
 {
    # skia memory leak?  See http://crbug.com/9757
    bug_9757
    Memcheck:Leak
    fun:_Znwj
    fun:_ZN10SkFontHost12FindTypefaceEPK10SkTypefacePKcNS0_5StyleE
    fun:_ZN10SkTypeface6CreateEPKcNS_5StyleE
 }
 {
-   # see http://crbug.com/10737
-   bug_10737
-   Memcheck:Leak
-   fun:calloc
-   fun:g_malloc0
-   fun:g_closure_new_simple
-   fun:g_cclosure_new
-   fun:_ZN16BrowserWindowGtk19ConnectAcceleratorsEv
-   fun:_ZN16BrowserWindowGtkC1EP7Browser
-   fun:_ZN13BrowserWindow19CreateBrowserWindowEP7Browser
-}
-{
    # real leak; see http://crbug.com/10738
    bug_10738
    Memcheck:Leak
    ...
    fun:_ZN20NavigationController22NavigateToPendingEntryEb
    fun:_ZN20NavigationController9LoadEntryEP15NavigationEntry
    fun:_ZN20NavigationController7LoadURLERK4GURLS2_j
 }
 {
    # Another variant of http://crbug.com/10738
@@ skipping 168 matching lines @@
    fun:_ZN3gfx6Canvas13SizeStringIntERKSbIwSt11char_traitsIwESaIwEERKNS_4FontEPiSA_i
 }
 {
    # See bug 12539 and 12549
    bug_12539
    Memcheck:Leak
    ...
    fun:_ZN7WebCore11ImageSource18createFrameAtIndexEj
    fun:_ZNK11webkit_glue12ImageDecoder6DecodeEPKhj
 }