Revert of Add base::TimeDelta::Max().

Revert of Add base::TimeDelta::Max(). (https://codereview.chromium.org/163413004/)

Reason for revert:
The return value of kInfiniteDuration() is sometimes (flaky) serialized to JSON. JSON cannot support non-finite numbers.

3 tests crashed:
PipelineIntegrationTest.MediaSource_ConfigChange_MP4
PipelineIntegrationTest.MediaSource_MP3
PipelineIntegrationTest.MediaSource_MP3_Icecast

[10201:10201:0226/144332:2770747412:FATAL:values.cc(200)] Check failed: false. Non-finite (i.e. NaN or positive/negative infinity) values cannot be represented in JSON

Complete stack trace:
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@[10180:10180:0226/144324:2762555674:FATAL:values.cc(200)] Check failed: false. Non-finite (i.e. NaN or positive/negative infinity) values cannot be represented in JSON@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3cf5d5d4] base::debug::StackTrace::StackTrace()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3cfcc109] logging::LogMessage::~LogMessage()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3d0c41df] base::FundamentalValue::FundamentalValue()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3d0c5528] base::DictionaryValue::SetDouble()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3c74ad4f] media::MediaLog::CreateTimeEvent()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3c7537f2] media::Pipeline::SetDuration()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3c7c0070] media::ChunkDemuxer::UpdateDuration()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3c7bfa7a] media::ChunkDemuxer::OnSourceInitDone()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3c7ccabc] base::internal::RunnableAdapter\u003C>::Run()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3c7cb58b] base::internal::InvokeHelper\u003C>::MakeItSo()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3c7c92be] base::internal::Invoker\u003C>::Run()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3c8aaba2] base::Callback\u003C>::Run()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3c9085e4] media::mp4::MP4StreamParser::ParseMoov()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3c9071d2] media::mp4::MP4StreamParser::ParseBox()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3c906e9a] media::mp4::MP4StreamParser::Parse()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3c7b66f3] media::SourceState::Append()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3c7bd18f] media::ChunkDemuxer::AppendData()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x0000007cf7b5] media::MockMediaSource::AppendData()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x0000007cfeae] media::MockMediaSource::DemuxerOpenedTask()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x0000007d497c] base::internal::RunnableAdapter\u003C>::Run()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x0000007d4272] base::internal::InvokeHelper\u003C>::MakeItSo()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x0000007d3a19] base::internal::Invoker\u003C>::Run()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3cf48063] base::Callback\u003C>::Run()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3cfec6b8] base::MessageLoop::RunTask()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3cfec7dc] base::MessageLoop::DeferOrRunPendingTask()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3cfecd03] base::MessageLoop::DoWork()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3cffb4bc] base::MessagePumpDefault::Run()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3cfec207] base::MessageLoop::RunHandler()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3d050dc8] base::RunLoop::Run()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3cfeb8fa] base::MessageLoop::Run()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x0000007d03d9] media::PipelineIntegrationTest::StartPipelineWithMediaSource()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x0000007c5f90] media::PipelineIntegrationTest_MediaSource_ConfigChange_MP4_Test::TestBody()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x000000954992] testing::internal::HandleSehExceptionsInMethodIfSupported\u003C>()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x000000950703] testing::internal::HandleExceptionsInMethodIfSupported\u003C>()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x000000944d65] testing::Test::Run()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x00000094538e] testing::TestInfo::Run()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x0000009458e9] testing::TestCase::Run()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x00000094a35b] testing::internal::UnitTestImpl::RunAllTests()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x000000955c37] testing::internal::HandleSehExceptionsInMethodIfSupported\u003C>()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x0000009515f7] testing::internal::HandleExceptionsInMethodIfSupported\u003C>()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x000000949349] testing::UnitTest::Run()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x0000009144d1] RUN_ALL_TESTS()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x000000913eb4] base::TestSuite::Run()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x00000063e8ca] base::internal::RunnableAdapter\u003C>::Run()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x00000063e84f] base::internal::InvokeHelper\u003C>::MakeItSo()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x00000063e7fb] base::internal::Invoker\u003C>::Run()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x00000090f1fb] base::Callback\u003C>::Run()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x00000090d2e2] base::(anonymous namespace)::LaunchUnitTestsInternal()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x00000090d5ae] base::LaunchUnitTests()@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x00000063e4f4] main@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x7f9c3b25776d] __libc_start_main@@@
@@@STEP_LOG_LINE@MediaSource_ConfigChange_MP4@ [0x000000484eb9] \u003Cunknown>@@@

Original issue's description:
> Add base::TimeDelta::Max().
> 
> TimeDelta::Max() is a maximum timedelta, larger than any timedelta you
> can compare it to. The results of adding it to a time, or another time
> delta are undefined.
> 
> R=ajwong@chromium.org,mkwst@chromium.org,jar@chromium.org
> TBR=jamesr@chomium.org,acolwell@chromium.org,nick@chromium.org
> BUG=None
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=253502

TBR=ajwong@chromium.org,mkwst@chromium.org,jar@chromium.org,phajdan.jr@chromium.org,gavinp@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=None

[waffles, 2014-02-26 23:45:31]

Created Revert of Add base::TimeDelta::Max().

[commit-bot: I haz the power, 2014-02-26 23:47:28]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/waffles@chromium.org/177023003/1

[commit-bot: I haz the power, 2014-02-26 23:55:15]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-02-26 23:55:16]

Commit queue rejected this change because the description was changed
between the time the change entered the commit queue and the time it
was ready to commit. You can safely check the commit box again.

[waffles, 2014-02-27 00:00:25]

The CQ bit was checked by waffles@chromium.org

[waffles, 2014-02-27 00:01:44]

The CQ bit was unchecked by waffles@chromium.org

[waffles, 2014-02-27 00:08:43]

On 2014/02/27 00:01:44, waffles wrote:
> The CQ bit was unchecked by mailto:waffles@chromium.org

This revert was landed by request via drover as revision 253643.