Revert of Generate StyleBackgroundData in ComputedStyleBase.

Revert of Generate StyleBackgroundData in ComputedStyleBase. (patchset #2 id:20001 of https://codereview.chromium.org/2841433002/ )

Reason for revert:
testing

Original issue's description:
> Generate StyleBackgroundData in ComputedStyleBase.
> 
> This patch generates the following fields as part of a group:
> - background ('storage_only' of type FillLayer)
> - background_color ('storage_only' of type Color)
> 
> Since both fields correspond to shorthands, we specify them in
> ComputedStyleExtraFields.json5.
> 
> Diff of generated files:
> https://gist.github.com/darrnshn/48a62d4ef7efe9f7a8c2b707eb57644f/revisions
> 
> BUG=628043
> 
> Review-Url: https://codereview.chromium.org/2841433002
> Cr-Commit-Position: refs/heads/master@{#467561}
> Committed: https://chromium.googlesource.com/chromium/src/+/9cd2845fb2b733d9d3852839d47f4dc93bdec090

TBR=nainar@chromium.org,rune@opera.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=628043
Review-Url: https://codereview.chromium.org/2849123002
Cr-Commit-Position: refs/heads/master@{#468557}
Committed: https://chromium.googlesource.com/chromium/src/+/0784842ece8911097e2675e08666b44896ee7ab2

[shend, 2017-05-01 03:58:03]

Created Revert of Generate StyleBackgroundData in ComputedStyleBase.

[shend, 2017-05-01 03:58:31]

shend@chromium.org changed reviewers:
- nainar@chromium.org, rune@opera.com

[shend, 2017-05-02 02:39:35]

shend@chromium.org changed reviewers:
+ nainar@chromium.org

[shend, 2017-05-02 02:39:36]

Hi Naina, PTAL

[nainar, 2017-05-02 02:43:43]

The CQ bit was checked by nainar@chromium.org

[nainar, 2017-05-02 02:43:43]

lgtm

[commit-bot: I haz the power, 2017-05-02 02:44:10]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-05-02 04:30:48]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1493693023641240, "parent_rev":
"8780ab5722f24aa3f463b2b5838b5ae229b3f946", "commit_rev":
"0784842ece8911097e2675e08666b44896ee7ab2"}

[commit-bot: I haz the power, 2017-05-02 04:31:00]

Description was changed from

==========
Revert of Generate StyleBackgroundData in ComputedStyleBase. (patchset #2
id:20001 of https://codereview.chromium.org/2841433002/ )

Reason for revert:
testing

Original issue's description:
> Generate StyleBackgroundData in ComputedStyleBase.
> 
> This patch generates the following fields as part of a group:
> - background ('storage_only' of type FillLayer)
> - background_color ('storage_only' of type Color)
> 
> Since both fields correspond to shorthands, we specify them in
> ComputedStyleExtraFields.json5.
> 
> Diff of generated files:
> https://gist.github.com/darrnshn/48a62d4ef7efe9f7a8c2b707eb57644f/revisions
> 
> BUG=628043
> 
> Review-Url: https://codereview.chromium.org/2841433002
> Cr-Commit-Position: refs/heads/master@{#467561}
> Committed:
https://chromium.googlesource.com/chromium/src/+/9cd2845fb2b733d9d3852839d47f...

TBR=nainar@chromium.org,rune@opera.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=628043
==========

to

==========
Revert of Generate StyleBackgroundData in ComputedStyleBase. (patchset #2
id:20001 of https://codereview.chromium.org/2841433002/ )

Reason for revert:
testing

Original issue's description:
> Generate StyleBackgroundData in ComputedStyleBase.
> 
> This patch generates the following fields as part of a group:
> - background ('storage_only' of type FillLayer)
> - background_color ('storage_only' of type Color)
> 
> Since both fields correspond to shorthands, we specify them in
> ComputedStyleExtraFields.json5.
> 
> Diff of generated files:
> https://gist.github.com/darrnshn/48a62d4ef7efe9f7a8c2b707eb57644f/revisions
> 
> BUG=628043
> 
> Review-Url: https://codereview.chromium.org/2841433002
> Cr-Commit-Position: refs/heads/master@{#467561}
> Committed:
https://chromium.googlesource.com/chromium/src/+/9cd2845fb2b733d9d3852839d47f...

TBR=nainar@chromium.org,rune@opera.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=628043

Review-Url: https://codereview.chromium.org/2849123002
Cr-Commit-Position: refs/heads/master@{#468557}
Committed:
https://chromium.googlesource.com/chromium/src/+/0784842ece8911097e2675e08666...
==========

[commit-bot: I haz the power, 2017-05-02 04:31:01]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/0784842ece8911097e2675e08666...