fixing epsilion value

BUG=359530
We are showing unnecessary glow effect during the max scroll. As updated in the bug (https://code.google.com/p/chromium/issues/detail?id=359530) unused_root_delta most of the time it is 0.01 or 0.02 becuase of which glow effect is shown.

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=261699

[MuVen, 2014-04-03 10:59:29]

Please take a look at the issue and let me know how to take on this issue
further .


thanks,

[MuVen, 2014-04-03 11:47:19]

I wasnt sure is this a regression of some other changes or not , After analysing
the logs i see that unsed_root_delta which is calculated from applied delta
value is more than 0.01 for which i have increased the epsilion value to 0.1.

the MathUtil function which projects the points from screen space we cant
modify(correct me if im wrong) due to which delta is more than 0.01.

Kindly guide me to fix this.

Thanks,
MuVen.

[aelias_OOO_until_Jul13, 2014-04-03 18:14:54]

OK.  Looks like the error can actually go that high and I have no better ideas
for how to compensate.  In that case, please just reuse the same constant for
this and move_threshold (I suggest "const float kErrorEpsilon= 0.1f;" and add a
test case for a value slightly higher than 0.1f.

[MuVen, 2014-04-04 05:16:00]

Hi Aelias,

Please take a look on the changes,

Uploaded patch as per review comments.

thanks,
MuVen.

[aelias_OOO_until_Jul13, 2014-04-04 05:21:06]

lgtm

[MuVen, 2014-04-04 05:28:10]

The CQ bit was checked by sataya.m@samsung.com

[commit-bot: I haz the power, 2014-04-04 05:28:19]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/sataya.m@samsung.com/223723002/20001

[commit-bot: I haz the power, 2014-04-04 07:45:57]

Change committed as 261699