Valgrind: Suppress a bunch of layout test errors.

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 # running overnight and removing outdated bugs/suppressions.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 7127 matching lines @@
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN7WebCore12_GLOBAL__N_110Serializer11handleErrorENS1_6StatusEPNS1_9StateBaseE
    fun:_ZN7WebCore12_GLOBAL__N_110Serializer27writeTransferredArrayBufferEN2v86HandleINS2_5ValueEEEjPNS1_9StateBaseE
    fun:_ZN7WebCore12_GLOBAL__N_110Serializer11doSerializeEN2v86HandleINS2_5ValueEEEPNS1_9StateBaseE
    fun:_ZN7WebCore12_GLOBAL__N_110Serializer27writeAndGreyArrayBufferViewEN2v86HandleINS2_6ObjectEEEPNS1_9StateBaseE
    fun:_ZN7WebCore12_GLOBAL__N_110Serializer11doSerializeEN2v86HandleINS2_5ValueEEEPNS1_9StateBaseE
    fun:_ZN7WebCore12_GLOBAL__N_110Serializer15DenseArrayState7advanceERS1_
    fun:_ZN7WebCore12_GLOBAL__N_110Serializer9serializeEN2v86HandleINS2_5ValueEEE
 }
+{
+   bug_293024_a
+   Memcheck:Leak
+   fun:malloc
+   fun:_ZN3WTF10fastMallocEm
+   fun:_ZN3WTF24ThreadSafeRefCountedBasenwEm
+   fun:_ZN6WebKit30AllowIndexedDBMainThreadBridge6createEPN7WebCore17WorkerGlobalScopeEPNS_13WebWorkerBaseERKN3WTF6StringES9_
+   fun:_ZN6WebKit22IDBFactoryBackendProxy14allowIndexedDBEPN7WebCore22ScriptExecutionContextERKN3WTF6StringERKNS_17WebSecurityOriginENS4_10PassRefPtrINS1_12IDBCallbacksEEE
+   ...
+   fun:_ZN2v88internal25FunctionCallbackArguments4CallEPFvRKNS_20FunctionCallbackInfoINS_5ValueEEEE
+}
+{
+   bug_293024_b
+   Memcheck:Leak
+   fun:malloc
+   fun:_ZN3WTF10fastMallocEm
+   fun:_ZN3WTF24ThreadSafeRefCountedBasenwEm
+   fun:_ZN6WebKit12_GLOBAL__N_131AllowFileSystemMainThreadBridge6createEPN7WebCore17WorkerGlobalScopeEPNS_13WebWorkerBaseERKN3WTF6StringE
+   fun:_ZN6WebKit22WorkerFileSystemClient15allowFileSystemEPN7WebCore22ScriptExecutionContextE
+   ...
+   fun:_ZN2v88internal25FunctionCallbackArguments4CallEPFvRKNS_20FunctionCallbackInfoINS_5ValueEEEE
+}
+{
+   bug_293033
+   Memcheck:Leak
+   fun:_Znw*
+   fun:_ZN7WebCore11ScriptState10forContextEN2v86HandleINS1_7ContextEEE
+   ...
+   fun:_ZN7WebCore*V8InternalL*MethodERKN2v820FunctionCallbackInfoINS1_5ValueEEE
+   fun:_ZN7WebCore*V8InternalL*MethodCallbackERKN2v820FunctionCallbackInfoINS1_5ValueEEE
+}
+{
+   bug_293043
+   Memcheck:Leak
+   fun:malloc
+   fun:CustomSetup
+   fun:VP8EnterCritical
+   fun:DecodePartition0
+   fun:IDecode
+   fun:WebPIUpdate
+   fun:_ZN7WebCore16WEBPImageDecoder6decodeEPKhmbm
+}
+{
+   bug_293049
+   Memcheck:Uninitialized
+   fun:_ZNK7WebCore8Document24webkitPointerLockElementEv
+   fun:_ZN7WebCore18DocumentV8InternalL39webkitPointerLockElementAttributeGetterEN2v85LocalINS1_6StringEEERKNS1_20PropertyCallbackInfoINS1_5ValueEEE
+   fun:_ZN7WebCore18DocumentV8InternalL47webkitPointerLockElementAttributeGetterCallbackEN2v85LocalINS1_6StringEEERKNS1_20PropertyCallbackInfoINS1_5ValueEEE
+   fun:_ZN2v88internal25PropertyCallbackArguments4CallEPFvNS_5LocalINS_6StringEEERKNS_20PropertyCallbackInfoINS_5ValueEEEES4_
+}
+{
+   bug_293058_a
+   Memcheck:Leak
+   fun:_Znw*
+   fun:_ZN7content12_GLOBAL__N_123WaitableCallbackResultsC1Ev
+   fun:_ZN7content12_GLOBAL__N_123WaitableCallbackResults11MaybeCreateERKN6WebKit22WebFileSystemCallbacksE
+   fun:_ZN7content17WebFileSystemImpl*
+}
+{
+   bug_293058_b
+   Memcheck:Leak
+   fun:_Znw*
+   fun:_ZN7content12_GLOBAL__N_123WaitableCallbackResultsC1Ev
+   fun:_ZN7content12_GLOBAL__N_123WaitableCallbackResults11MaybeCreateERKN6WebKit22WebFileSystemCallbacksE
+   fun:_ZN7content17WebFileSystemImpl16createFileWriterERKN6WebKit6WebURLEPNS1_19WebFileWriterClientENS1_22WebFileSystemCallbacksE
+   fun:_ZN7WebCore17DOMFileSystemSync12createWriterEPKNS_13FileEntrySyncERNS_14ExceptionStateE
+   fun:_ZN7WebCore13FileEntrySync12createWriterERNS_14ExceptionStateE
+}