Valgrind reports memory leaks in PPAPITest.FileRef (ui_tests on Linux)

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 # running overnight and removing outdated bugs/suppressions.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 4810 matching lines @@
 }
 {
    bug_101146c
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN11webkit_glue16WebURLLoaderImplC1Ev
    fun:_ZN11webkit_glue25WebKitPlatformSupportImpl15createURLLoaderEv
    fun:_ZN11webkit_glue15ResourceFetcher5StartEPN6WebKit8WebFrameE
    fun:_ZN11webkit_glue15ResourceFetcherC2ERK4GURLPN6WebKit8WebFrameENS4_13WebURLRequest10TargetTypeEP14CallbackRunnerI6Tuple2IRKNS4_14WebURLResponseERKSsEE
    fun:_ZN11webkit_glue26ResourceFetcherWithTimeoutC1ERK4GURLPN6WebKit8WebFrameENS4_13WebURLRequest10TargetTypeEiP14CallbackRunnerI6Tuple2IRKNS4_14WebURLResponseERKSsEE
-   fun:_ZN11webkit_glue27AltErrorPageResourceFetcherC1ERK4GURLPN6WebKit8WebFrameERKNS4_11WebURLErrorEP14CallbackRunnerI6Tuple3IS6_S9_RKSsEE
+   fun:_ZN11webkit_glue27AltErrorPageResourceFetcherC1ERK4GURLPN6WebKit8WebFrameERKNS4_11WebURLError*Callback*
    fun:_ZN14RenderViewImpl27MaybeLoadAlternateErrorPageEPN6WebKit8WebFrameERKNS0_11WebURLErrorEb
    fun:_ZN14RenderViewImpl22didFailProvisionalLoadEPN6WebKit8WebFrameERKNS0_11WebURLErrorE
    fun:_ZN6WebKit12WebFrameImpl7didFailERKN7WebCore13ResourceErrorEb
 }
 {
    bug_101151
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN7WebCore23v8StringToWebCoreStringIN3WTF6StringEEET_N2v86HandleINS4_6StringEEENS_12ExternalModeE
    fun:_ZN7WebCore15V8ParameterBase8toStringIN3WTF6StringEEET_v
@@ skipping 424 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
 }