Add --enable-html-imports commandline switch and about-flags entry.

Add --enable-html-imports commandline switch and about-flags entry.

BUG=240592
R=dglazkov,ojan,creis

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=216462

[Hajime Morrita, 2013-08-07 01:54:58]

Hi, could you take a look?
I'm asking creis@ for the review as git cl suggested.

This is what we discussed at
https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/EQt_Fqjs4g8

[Charlie Reis, 2013-08-07 17:16:58]

No objections here, but John's a better reviewer for new switches and flags. 
The only thing I'm not sure about is whether there's any sane ordering to these
files, since the additions seem to be in fairly arbitrary places.

[jam, 2013-08-07 17:20:45]

On 2013/08/07 17:16:58, creis wrote:
> No objections here, but John's a better reviewer for new switches and flags. 
> The only thing I'm not sure about is whether there's any sane ordering to
these
> files, since the additions seem to be in fairly arbitrary places.

lgtm

creis: any web platform related switched are always fine to add. as for
ordering, yes it's unfortunate how this file has turned out. we just need to do
one pass and reorder all the switches.

[Hajime Morrita, 2013-08-07 23:28:59]

Thanks for the review, folks!

> creis: any web platform related switched are always fine to add. as for
> ordering, yes it's unfortunate how this file has turned out. we just need to
do
> one pass and reorder all the switches.
Agreed. One tricky part is that the order in about_flags is visible from users.
So just doing alphabetic sort might confuse them.

[commit-bot: I haz the power, 2013-08-07 23:29:09]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/morrita@chromium.org/22342005/1

[commit-bot: I haz the power, 2013-08-07 23:36:32]

Step "update" is always a major failure.
Look at the try server FAQ for more details.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=android_cl...

[commit-bot: I haz the power, 2013-08-07 23:58:09]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/morrita@chromium.org/22342005/1

[commit-bot: I haz the power, 2013-08-08 22:20:52]

Change committed as 216462