Blank assets for staging new media UI.

Blank assets for staging new media UI.

This CL adds new zero-length png and css assets, so that they can
be referenced in blink_platform_impl.cc (etc.) for staging, before
the main CL in WebKit lands.

This CL does not change any existing functionality.

BUG=446350, 488625, 487344
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=197823

[liberato (no reviews please), 2015-06-23 16:33:30]

liberato@chromium.org changed reviewers:
+ jochen@chromium.org, philipj@opera.com

[liberato (no reviews please), 2015-06-23 16:53:24]

these are just the assets to help stage the new media playback UI changes.  once
these and https://codereview.chromium.org/1197033007/ land, i'll have the
ability to rebaseline the layout tests independently of the main UI CL
(https://codereview.chromium.org/1156993013/).

thanks
-fl

[jochen (gone - plz use gerrit), 2015-06-24 14:46:09]

are the css files empty on purpose?

[liberato (no reviews please), 2015-06-24 15:01:56]

On 2015/06/24 14:46:09, jochen wrote:
> are the css files empty on purpose?

yes, they're all intended to be placeholders so that the IDR_MEDIAPLAYER_*
constants exist for https://codereview.chromium.org/1197033007/.  but it looks
like i failed to git add blink_image_resources.grd to reference them, so i see
the confusion.  i'll upload a new CL.

with these two, i can get the trybots to run the new media player UI (for the
layout tests) with https://codereview.chromium.org/1156993013/ .

thanks!
-fl

[liberato (no reviews please), 2015-06-24 15:06:54]

added missing grd files to reference the blank assets.

thanks
-fl

[liberato (no reviews please), 2015-06-24 16:02:12]

replaced everything with 1x1 pngs (67 bytes), since grit didn't like nonzero
files that aren't actual PNGs.

so now patch is happy, and grit is again happy.

[jochen (gone - plz use gerrit), 2015-06-25 09:29:54]

lgtm

[liberato (no reviews please), 2015-06-25 15:03:21]

The CQ bit was checked by liberato@chromium.org

[commit-bot: I haz the power, 2015-06-25 15:03:41]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1207463002/60001

[liberato (no reviews please), 2015-06-25 15:04:06]

On 2015/06/25 09:29:54, jochen wrote:
> lgtm

thanks!
-fl

[commit-bot: I haz the power, 2015-06-25 15:07:09]

Committed patchset #4 (id:60001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=197823