QUIC - fix uninitialized reads in net::QuicCongestionManager::SetFromConfig

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 # running overnight and removing outdated bugs/suppressions.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 6430 matching lines @@
    fun:_ZN7WebCore17RenderTextControl29computePreferredLogicalWidthsEv
    ...
    fun:_ZN7WebCore11RenderBlock6layoutEv
 }
 {
    bug_313521
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN8app_list32AppListModelTest_FolderItem_Test8TestBodyEv
 }
-{
-   bug_313738
-   Memcheck:Uninitialized
-   ...
-   fun:snprintf
-   fun:_ZN7testing12_GLOBAL__N_126PrintByteSegmentInObjectToEPKhmmPSo
-   fun:_ZN7testing12_GLOBAL__N_124PrintBytesInObjectToImplEPKhmPSo
-   fun:_ZN7testing9internal220PrintBytesInObjectToEPKhmPSo
-   fun:_ZN7testing9internal220TypeWithoutFormatterIN3net10QuicConfigELNS0_8TypeKindE2EE10PrintValueERKS3_PSo
-   fun:_ZN7testing9internal2lsIcSt11char_traitsIcEN3net10QuicConfigEEERSt13basic_ostreamIT_T0_ESA_RKT1_
-   fun:_ZN16testing_internal26DefaultPrintNonContainerToIN3net10QuicConfigEEEvRKT_PSo
-   fun:_ZN7testing8internal14DefaultPrintToIN3net10QuicConfigEEEvcNS0_13bool_constantILb0EEERKT_PSo
-   fun:_ZN7testing8internal7PrintToIN3net10QuicConfigEEEvRKT_PSo
-   fun:_ZN7testing8internal16UniversalPrinterIN3net10QuicConfigEE5PrintERKS3_PSo
-   fun:_ZN7testing8internal14UniversalPrintIN3net10QuicConfigEEEvRKT_PSo
-   fun:_ZN7testing8internal16UniversalPrinterIRKN3net10QuicConfigEE5PrintES5_PSo
-   fun:_ZN7testing8internal18TuplePrefixPrinterILm1EE13PrintPrefixToINSt3tr15tupleIRKN3net10QuicConfigEbNS4_10_NullClassESA_SA_SA_SA_SA_SA_SA_EEEEvRKT_PSo
-   fun:_ZN7testing8internal18TuplePrefixPrinterILm2EE13PrintPrefixToINSt3tr15tupleIRKN3net10QuicConfigEbNS4_10_NullClassESA_SA_SA_SA_SA_SA_SA_EEEEvRKT_PSo
-   fun:_ZN7testing8internal12PrintTupleToINSt3tr15tupleIRKN3net10QuicConfigEbNS2_10_NullClassES8_S8_S8_S8_S8_S8_S8_EEEEvRKT_PSo
-   fun:_ZN7testing8internal7PrintToIRKN3net10QuicConfigEbEEvRKNSt3tr15tupleIT_T0_NS6_10_NullClassESA_SA_SA_SA_SA_SA_SA_EEPSo
-   fun:_ZN7testing8internal16UniversalPrinterINSt3tr15tupleIRKN3net10QuicConfigEbNS2_10_NullClassES8_S8_S8_S8_S8_S8_S8_EEE5PrintERKS9_PSo
-   fun:_ZN7testing8internal14UniversalPrintINSt3tr15tupleIRKN3net10QuicConfigEbNS2_10_NullClassES8_S8_S8_S8_S8_S8_S8_EEEEvRKT_PSo
-   fun:_ZNK7testing8internal18FunctionMockerBaseIFvRKN3net10QuicConfigEbEE32UntypedDescribeUninterestingCallEPKvPSo
-   fun:_ZN7testing8internal25UntypedFunctionMockerBase17UntypedInvokeWithEPKv
-}