Revert of Don't preload scripts with invalid type/language attributes

Revert of Don't preload scripts with invalid type/language attributes (patchset #5 id:80001 of https://codereview.chromium.org/2099853002/ )

Reason for revert:
Some compat risk for this change was brought up. Going to send a note to blink-dev before re-landing.

Original issue's description:
> Don't preload scripts with invalid type/language attributes
>
> This patch keeps track of a script tag's type and language attributes,
> and gates preloading if they are invalid. This aligns the preload scanner's
> policy with the ScriptLoader's policy.
>
> BUG=623109
>
> Committed: https://crrev.com/23f4df7587f338837a709afb192900102584fc0a
> Cr-Commit-Position: refs/heads/master@{#403182}

TBR=yoav@yoav.ws
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=623109
Committed: https://crrev.com/a825f90e8fdbd9e41bd2dcafffa88662fb50878f
Cr-Commit-Position: refs/heads/master@{#404153}

[Charlie Harrison, 2016-07-07 12:08:08]

The CQ bit was checked by csharrison@chromium.org

[Charlie Harrison, 2016-07-07 12:08:08]

Created Revert of Don't preload scripts with invalid type/language attributes

[commit-bot: I haz the power, 2016-07-07 12:08:19]

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, 2016-07-07 13:58:53]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-07 13:58:54]

CQ bit was unchecked.

[commit-bot: I haz the power, 2016-07-07 14:01:54]

Description was changed from

==========
Revert of Don't preload scripts with invalid type/language attributes (patchset
#5 id:80001 of https://codereview.chromium.org/2099853002/ )

Reason for revert:
Some compat risk for this change was brought up. Going to send a note to
blink-dev before re-landing.

Original issue's description:
> Don't preload scripts with invalid type/language attributes
> 
> This patch keeps track of a script tag's type and language attributes,
> and gates preloading if they are invalid. This aligns the preload scanner's
> policy with the ScriptLoader's policy.
> 
> BUG=623109
> 
> Committed: https://crrev.com/23f4df7587f338837a709afb192900102584fc0a
> Cr-Commit-Position: refs/heads/master@{#403182}

TBR=yoav@yoav.ws
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=623109
==========

to

==========
Revert of Don't preload scripts with invalid type/language attributes (patchset
#5 id:80001 of https://codereview.chromium.org/2099853002/ )

Reason for revert:
Some compat risk for this change was brought up. Going to send a note to
blink-dev before re-landing.

Original issue's description:
> Don't preload scripts with invalid type/language attributes
>
> This patch keeps track of a script tag's type and language attributes,
> and gates preloading if they are invalid. This aligns the preload scanner's
> policy with the ScriptLoader's policy.
>
> BUG=623109
>
> Committed: https://crrev.com/23f4df7587f338837a709afb192900102584fc0a
> Cr-Commit-Position: refs/heads/master@{#403182}

TBR=yoav@yoav.ws
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=623109

Committed: https://crrev.com/a825f90e8fdbd9e41bd2dcafffa88662fb50878f
Cr-Commit-Position: refs/heads/master@{#404153}
==========

[commit-bot: I haz the power, 2016-07-07 14:01:55]

Patchset 1 (id:??) landed as
https://crrev.com/a825f90e8fdbd9e41bd2dcafffa88662fb50878f
Cr-Commit-Position: refs/heads/master@{#404153}

[Yoav Weiss, 2016-07-07 14:32:26]

On 2016/07/07 14:01:55, commit-bot: I haz the power wrote:
> Patchset 1 (id:??) landed as
> https://crrev.com/a825f90e8fdbd9e41bd2dcafffa88662fb50878f
> Cr-Commit-Position: refs/heads/master@{#404153}

LGTM