Instantiate HttpRequestInfo before HttpNetworkTransaction in unit tests.

tools/valgrind/memcheck/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 # running overnight and removing outdated bugs/suppressions.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 3626 matching lines @@
    fun:_Z16DispatchToMethodIN8remoting8protocol17JingleSessionTestEMS2_FvvEEvPT_T0_RK6Tuple0
    fun:_ZN14RunnableMethodIN8remoting8protocol17JingleSessionTestEMS2_FvvE6Tuple0E3RunEv
    fun:_ZN11MessageLoop7RunTaskEP4Task
    fun:_ZN11MessageLoop21DeferOrRunPendingTaskERKNS_11PendingTaskE
    fun:_ZN11MessageLoop6DoWorkEv
    fun:_ZN8remoting12JingleThread17JingleMessagePump9OnMessageEPN9talk_base7MessageE
    fun:_ZN9talk_base12MessageQueue8DispatchEPNS_7MessageE
    fun:_ZN9talk_base6Thread15ProcessMessagesEi
 }
 {
-   bug_70825
-   Memcheck:Addr1
-   fun:_ZNK3net10UploadData10is_chunkedEv
-   fun:_ZNK3net16UploadDataStream10is_chunkedEv
-   fun:_ZN3net16HttpStreamParserD0Ev
-   ...
-   fun:_ZN10scoped_ptrIN3net16HttpStreamParserEED1Ev
-   fun:_ZN3net15HttpBasicStreamD0Ev
-   ...
-   fun:_ZN10scoped_ptrIN3net10HttpStreamEED1Ev
-   fun:_ZN3net22HttpNetworkTransactionD0Ev
-   ...
-   fun:_ZN10scoped_ptrIN3net15HttpTransactionEED1Ev
-   fun:_ZN3net42HttpNetworkTransactionTest_Ignores100_Test8TestBodyEv
-}
-{
    bug_70924_a
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN3WTF20ThreadIdentifierData10initializeEj
    fun:_ZN3WTF13currentThreadEv
    fun:_ZN3WTF20initializeMainThreadEv
    fun:_ZN6WebKit10initializeEPNS_12WebKitClientE
 }
 {
    bug_70924_b
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN3WTF14ThreadSpecificINS_13WTFThreadDataEE3setEPS1_
    fun:_ZN3WTF14ThreadSpecificINS_13WTFThreadDataEEcvPS1_Ev
    fun:_ZN3WTF14ThreadSpecificINS_13WTFThreadDataEEdeEv
    fun:_ZN3WTF13wtfThreadDataEv
    fun:_ZN3WTF11stringTableEv
    fun:_ZN3WTF16addToStringTableIPKcNS_17CStringTranslatorEEENS_10PassRefPtrINS_10StringImplEEERKT_
    fun:_ZN3WTF12AtomicString3addEPKc
    fun:_ZN3WTF12AtomicStringC1EPKc
    fun:_ZN3WTF12AtomicString4initEv
    fun:_ZN6WebKit10initializeEPNS_12WebKitClientE
 }