Use a converter to resolve style for -webkit-filter and backdrop-filter

Use a converter to resolve style for -webkit-filter and backdrop-filter

Gets rid of the custom builders with a simple refactor of the
FilterOperationResolver.

BUG=109224
Committed: https://crrev.com/4d1155c211001713c75d44616abcd6c7ab1afd92
Cr-Commit-Position: refs/heads/master@{#357540}

[fs, 2015-11-02 19:11:17]

fs@opera.com changed reviewers:
+ alancutter@chromium.org, timloh@chromium.org

[Timothy Loh, 2015-11-02 23:33:48]

On 2015/11/02 19:11:18, fs wrote:

lgtm

[fs, 2015-11-03 08:45:36]

The CQ bit was checked by fs@opera.com

[commit-bot: I haz the power, 2015-11-03 08:45:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1407123011/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1407123011/1

[commit-bot: I haz the power, 2015-11-03 09:36:48]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-03 09:37:54]

Patchset 1 (id:??) landed as
https://crrev.com/4d1155c211001713c75d44616abcd6c7ab1afd92
Cr-Commit-Position: refs/heads/master@{#357540}