Revert of Revert of "Remove SSLClientAuthHandler's RDH dependency." (https://codereview.chromium.org/59687300…

Revert of Revert of "Remove SSLClientAuthHandler's RDH dependency." (https://codereview.chromium.org/59687300… (patchset #2 id:20001 of https://codereview.chromium.org/755933002/)

Reason for revert:
Leak in SSLUITestWithClientCert.TestWSSClientCert

http://build.chromium.org/p/chromium.memory/builders/Linux%20Chromium%20OS%20ASan%20LSan%20Tests%20%281%29/builds/4654/steps/browser_tests/logs/TestWSSClientCert

First reported leak:
Indirect leak of 104 byte(s) in 1 object(s) allocated from:
    #0 0x57659b in operator new(unsigned long) (/tmp/run_tha_test0QXqvt/out/Release/browser_tests+0x57659b)
    #1 0x2c7762d in ProfileIOData::ResourceContext::CreateClientCertStore() chrome/browser/profiles/profile_io_data.cc:920:7
    #2 0x6c908bd in content::ResourceLoader::OnCertificateRequested(net::URLRequest*, net::SSLCertRequestInfo*) content/browser/loader/resource_loader.cc:298:7
    #3 0x3e3e15f in net::URLRequest::NotifyCertificateRequested(net::SSLCertRequestInfo*) net/url_request/url_request.cc:1109:5
    #4 0x405ea0d in net::URLRequestHttpJob::OnStartCompleted(int) net/url_request/url_request_http_job.cc:925:5
    #5 0x3ccd86c in Run base/callback.h:396:12
    #6 0x3ccd86c in net::HttpCache::Transaction::DoCallback(int) net/http/http_cache_transaction.cc:710
    #7 0x3cca160 in HandleResult net/http/http_cache_transaction.cc:716:5
    #8 0x3cca160 in net::HttpCache::Transaction::DoLoop(int) net/http/http_cache_transaction.cc:977
    #9 0x3cc7a68 in net::HttpCache::Transaction::OnIOComplete(int) net/http/http_cache_transaction.cc:2934:3
    #10 0xc78765a in Run base/callback.h:396:12
    #11 0xc78765a in DevToolsNetworkTransaction::OnCallback(int) chrome/browser/devtools/devtools_network_transaction.cc:73
    #12 0x3ceab0c in Run base/callback.h:396:12
    #13 0x3ceab0c in DoCallback net/http/http_network_transaction.cc:577
    #14 0x3ceab0c in net::HttpNetworkTransaction::OnIOComplete(int) net/http/http_network_transaction.cc:594
    #15 0x394b58f in Run base/callback.h:396:12
    #16 0x394b58f in base::debug::TaskAnnotator::RunTask(char const*, char const*, base::PendingTask const&) base/debug/task_annotator.cc:63
    #17 0x388dd3c in base::MessageLoop::RunTask(base::PendingTask const&) base/message_loop/message_loop.cc:448:3
    #18 0x388e49b in base::MessageLoop::DeferOrRunPendingTask(base::PendingTask const&) base/message_loop/message_loop.cc:458:5
    #19 0x388ef57 in base::MessageLoop::DoWork() base/message_loop/message_loop.cc:567:13
    #20 0x3932db7 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) base/message_loop/message_pump_libevent.cc:232:21
    #21 0x38c0c1c in base::RunLoop::Run() base/run_loop.cc:55:3
    #22 0x388c843 in base::MessageLoop::Run() base/message_loop/message_loop.cc:310:3
    #23 0x6af33c1 in content::BrowserThreadImpl::IOThreadRun(base::MessageLoop*) content/browser/browser_thread_impl.cc:218:3
    #24 0x6af375e in content::BrowserThreadImpl::Run(base::MessageLoop*) content/browser/browser_thread_impl.cc:253:14
    #25 0x390cec1 in base::Thread::ThreadMain() base/threading/thread.cc:228:5
    #26 0x3901e17 in base::(anonymous namespace)::ThreadFunc(void*) base/threading/platform_thread_posix.cc:80:3
    #27 0x7f99b0016e99 in start_thread /build/buildd/eglibc-2.15/nptl/pthread_create.c:308

Original issue's description:
> Revert of "Remove SSLClientAuthHandler's RDH dependency." (https://codereview.chromium.org/596873002)
>
> Reason for revert:
> Causes browser crash if URL request is cancelled during client cert loading.
>
> BUG=422765, 427844, 376003
> TBR=davidben@chromium.org
>
> Committed: https://crrev.com/e18bf1d9005b08bba3637b16d744245e5467af0e
> Cr-Commit-Position: refs/heads/master@{#305707}

TBR=pneubeck@chromium.org,davidben@chromium.org,mattm@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=422765, 427844, 376003
Committed: https://crrev.com/e9651b35346a242b6e167e8eaa7c43b76897ddca
Cr-Commit-Position: refs/heads/master@{#305828}

[robliao, 2014-11-26 17:59:29]

Created Revert of Revert of "Remove SSLClientAuthHandler's RDH dependency."
(https://codereview.chromium.org/59687300…

[robliao, 2014-11-26 17:59:37]

The CQ bit was checked by robliao@chromium.org