Flex grow wrongly calculated for value between 0 and 1

Flex grow wrongly calculated for value between 0 and 1

When flex grow value for a flex item is set between 0 and 1,
the extra space to flex for the flex item is wrongly calculated.

If the value of totalFlexGrow is less than 1, then the available
space would be totalFlexGrow times the available space. And
then this space is distributed to all the flex items within the
flex line.

The spec describing it is:
http://dev.w3.org/csswg/css-flexbox-1/#resolve-flexible-lengths...
specifically this line "If the sum of the unfrozen flex items’ flex
factors is less than one, multiply the initial free space by this sum."

BUG=480752
Committed: https://crrev.com/5bdbe6de227d5408f9f289e99f405ebee46cc58f
Cr-Commit-Position: refs/heads/master@{#351567}

[ashlin.j, 2015-09-30 09:40:45]

ashlin.j@samsung.com changed reviewers:
+ cbiesinger@chromium.org, harpreet.sk@samsung.com

[ashlin.j, 2015-09-30 09:44:40]

This patch was reviewed at https://codereview.chromium.org/1314703006/.
Had got a LGTM.
Uploading the patch again from the main repository.

[cbiesinger, 2015-09-30 14:14:58]

lgtm

[cbiesinger, 2015-09-30 14:15:02]

The CQ bit was checked by cbiesinger@chromium.org

[commit-bot: I haz the power, 2015-09-30 14:16:35]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1375163002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1375163002/1

[commit-bot: I haz the power, 2015-09-30 15:36:15]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-30 15:37:17]

Patchset 1 (id:??) landed as
https://crrev.com/5bdbe6de227d5408f9f289e99f405ebee46cc58f
Cr-Commit-Position: refs/heads/master@{#351567}