Revert of Add more trace events to "benchmark" category

Revert of Add more trace events to "benchmark" category (patchset #4 id:50001 of https://codereview.chromium.org/855553002/)

Reason for revert:
This CL has perf implication and currently all the android perf bots are red.

So lets delay the landing until we get perf bots back to normal

Original issue's description:
> Add more trace events to "benchmark" category
>
> This is to make the trace events captured during smoothness test more
> useful in debugging smoothness/latency issues.
>
> These added trace events are supposed to be giving most useful information
> about the input/scheduling/rendering pipeline and have low occurrence in
> each frame so as to minimize the performance overhead.
>
> Following are the list for the added trace events roughly in the order
> of the input->rendering pipeline:
>
> LatencyInfo.Flow                                 // so we can follow the input latency flow
> RenderWidgetHostViewAndroid::OnVSync             // when frame is started
> InputHandlerProxy::HandleInputEvent              // when the input event is handled on impl
> RenderWidget::OnHandleInputEvent                 // when the input event is handled on main
> Scheduler::BeginFrame                            // cc decides to schedule a frame
> Scheduler::BeginRetroFrame                       // cc starts a retro frame
> Scheduler::BeginImplFrame                        // impl frame is scheduled
> Scheduler::OnBeginImplFrameDeadline              // impl frame actually starts
> OnSwapCompositorFrame                            // browser gets notified that renderer frame is ready
> CompositorImpl::PostComposit                     // browser schedules a frame
> SingleThreadProxy::CompositeImmediately          // browser starts a frame
> SingleThreadProxy::DidSwapBuffersCompleteOnImplThread  // browser frame is done
>
> BUG=449258
>
> Committed: https://crrev.com/0190b029a83fad58e31a039bd8bba62d9d12ee5a
> Cr-Commit-Position: refs/heads/master@{#312664}

TBR=sievers@chromium.org,brianderson@chromium.org,skyostil@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=449258
Committed: https://crrev.com/ef1c46ab8a359ae309b49b3222c10bb2ef0bcf09
Cr-Commit-Position: refs/heads/master@{#312668}

[Yufeng Shen (Slow to review), 2015-01-22 20:24:01]

Created Revert of Add more trace events to "benchmark" category

[commit-bot: I haz the power, 2015-01-22 20:24:47]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/867773002/1

[commit-bot: I haz the power, 2015-01-22 20:26:18]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-22 20:27:23]

Patchset 1 (id:??) landed as
https://crrev.com/ef1c46ab8a359ae309b49b3222c10bb2ef0bcf09
Cr-Commit-Position: refs/heads/master@{#312668}