Revert 266470 "Implement async touchmove dispatch during scroll"

Revert 266470 "Implement async touchmove dispatch during scroll"

valgrind reports uninitialized memory usage:

http://build.chromium.org/p/chromium.memory.fyi/builders/Linux%20Tests%20%28valgrind%29%281%29/builds/33440/steps/memory%20test%3A%20content/logs/AD4CE3561F03B37F

fun:_ZN7content15TouchEventQueue25SendTouchEventImmediatelyERKNS_20EventWithLatencyInfoIN5blink13WebTouchEventEEE
fun:_ZN7content15TouchEventQueue26ForwardNextEventToRendererEv
fun:_ZN7content15TouchEventQueue10QueueEventERKNS_20EventWithLatencyInfoIN5blink13WebTouchEventEEE
fun:_ZN7content19TouchEventQueueTest14SendTouchEventERKN5blink13WebTouchEventE
fun:_ZN7content19TouchEventQueueTest14SendTouchEventEv
fun:_ZN7content19TouchEventQueueTest15PressTouchPointEff
fun:_ZN7content30TouchEventQueueTest_Basic_Test8TestBodyEv

http://build.chromium.org/p/chromium.memory.fyi/builders/Linux%20Tests%20%28valgrind%29%281%29/builds/33440/steps/memory%20test%3A%20content/logs/383BD397F91FBC46

fun:_ZN7content15TouchEventQueue25SendTouchEventImmediatelyERKNS_20EventWithLatencyInfoIN5blink13WebTouchEventEEE
fun:_ZN7content15TouchEventQueue19TouchTimeoutHandler17ConfirmTouchEventENS_18InputEventAckStateE
fun:_ZN7content15TouchEventQueue15ProcessTouchAckENS_18InputEventAckStateERKN2ui11LatencyInfoE
fun:_ZN7content19TouchEventQueueTest17SendTouchEventAckENS_18InputEventAckStateE
fun:_ZN7content42TouchEventQueueTest_TouchTimeoutBasic_Test8TestBodyEv

etc

> Implement async touchmove dispatch during scroll
> 
> This implements a touch dispatch model in which touchmove sending is throttled
> while a scroll sequence is active and being consumed.  Such touchmove's are
> marked with |cancelable = false|, indicating to any potential consumers that the
> event cannot be prevented from triggering a platform gesture. Throttling limits
> the touchmove sending rate during scrolling to 1 event per 200ms.
> 
> BUG=346693
> 
> Review URL: https://codereview.chromium.org/245833002

TBR=jdduke@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=266579

[Nico, 2014-04-28 15:45:01]

Committed patchset #1 manually as r266579.

[jdduke (slow), 2014-04-28 15:46:58]

On 2014/04/28 15:45:01, Nico wrote:
> Committed patchset #1 manually as r266579.

Have a fix landing but OK... https://codereview.chromium.org/253813003/