[android_webview] Set 'fling active' flag only from computeScroll.

[android_webview] Set 'fling active' flag only from computeScroll.

This prevents us getting stuck in smoothness mode if the embedding application
inhibits the View.computeScroll callback.

BUG=339245
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=247930

[mkosiba (inactive), 2014-01-30 01:49:43]

Hey Bo, would you mind checking if this actually works (I'm 99% sure it should,
but..)? My guest workstation is kinda slow.

[boliu, 2014-01-30 02:04:09]

On 2014/01/30 01:49:43, mkosiba wrote:
> Hey Bo, would you mind checking if this actually works (I'm 99% sure it
should,
> but..)? My guest workstation is kinda slow.

Yep, works. How slow is this though...

[boliu, 2014-01-30 02:05:13]

On 2014/01/30 02:04:09, boliu wrote:
> On 2014/01/30 01:49:43, mkosiba wrote:
> > Hey Bo, would you mind checking if this actually works (I'm 99% sure it
> should,
> > but..)? My guest workstation is kinda slow.
> 
> Yep, works. How slow is this though...

Ehh, scratch that, I had my own hack in there too

[boliu, 2014-01-30 02:13:30]

This seems to go too far the other way, now we are not in smoothness mode even
in a fling.

[boliu, 2014-01-30 02:33:23]

lgtm

[commit-bot: I haz the power, 2014-01-30 06:42:39]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mkosiba@chromium.org/149963002/1

[commit-bot: I haz the power, 2014-01-30 10:43:59]

Change committed as 247930