Revert of Moving background animation ticking from LayerTreeHostImpl into the Scheduler.

Revert of Moving background animation ticking from LayerTreeHostImpl into the Scheduler. (patchset #10 id:480001 of https://codereview.chromium.org/595973002/)

Reason for revert:
Reverting because it breaks the following interactive_ui_tests;
 * InterruptedAutoStartEnrollment
 * LoginUIVisible
 * PRE_InterruptedAutoStartEnrollment
 * PRE_LoginUIVisible

The failure log is;

[27898:27924:1109/213628:FATAL:layer_animation_controller.cc(215)] Check failed: last_tick_time_ != base::TimeTicks().
#0 0x7f92b9beb75e base::debug::StackTrace::StackTrace()
#1 0x7f92b9c7ec82 logging::LogMessage::~LogMessage()
#2 0x7f92b8cdafc4 cc::LayerAnimationController::UpdateState()
#3 0x7f92b8fe9474 cc::LayerTreeHostImpl::UpdateAnimationState()
#4 0x7f92b902ecf4 cc::ThreadProxy::DrawSwapInternal()
#5 0x7f92b902f542 cc::ThreadProxy::ScheduledActionDrawAndSwapIfPossible()
#6 0x7f92b902f59c cc::ThreadProxy::ScheduledActionDrawAndSwapIfPossible()
#7 0x7f92b8f83324 cc::Scheduler::DrawAndSwapIfPossible()
#8 0x7f92b8f80541 cc::Scheduler::ProcessScheduledActions()
#9 0x7f92b8f7f54d cc::Scheduler::OnBeginImplFrameDeadline()

Original issue's description:
> Moving background animation ticking from LayerTreeHostImpl into the Scheduler.
>
> Background ticking currently happens in the LayerTreeHostImpl, this makes it very hard to preserve the monotonicity guarantee needed by frame times. http://crrev.com/267783004 set up the scheduler to become the source of background ticks and this CL makes use of that functionality.
>
> BUG=345459
>
> Committed: https://crrev.com/4df3c4366015739a7c6b6c1539a8d7c9198e38ef
> Cr-Commit-Position: refs/heads/master@{#302757}
>
> Committed: https://crrev.com/185438b3e5e3f43ce2996da0022f510fbe193a6e
> Cr-Commit-Position: refs/heads/master@{#303423}

TBR=danakj@chromium.org,brianderson@chromium.org,skyostil@chromium.org,ajuma@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=345459
Committed: https://crrev.com/cfdec29c10b50750d042f4bcfdce3ccb56b4cd81
Cr-Commit-Position: refs/heads/master@{#303426}

[mithro-old, 2014-11-10 06:20:17]

Created Revert of Moving background animation ticking from LayerTreeHostImpl
into the Scheduler.

[commit-bot: I haz the power, 2014-11-10 06:21:13]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/713783002/1

[commit-bot: I haz the power, 2014-11-10 06:21:55]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-11-10 06:22:32]

Patchset 1 (id:??) landed as
https://crrev.com/cfdec29c10b50750d042f4bcfdce3ccb56b4cd81
Cr-Commit-Position: refs/heads/master@{#303426}