Revert of Add blink::WebSocketHandshakeThrottle

Revert of Add blink::WebSocketHandshakeThrottle (patchset #3 id:40001 of https://codereview.chromium.org/2930263002/ )

Reason for revert:
New header not added to build causes failures:

https://luci-logdog.appspot.com/v/?s=chromium%2Fbb%2Ftryserver.chromium.linux%2Flinux_chromium_rel_ng%2F479687%2F%2B%2Frecipes%2Fsteps%2Fcheck_gn_headers__with_patch_%2F0%2Fstdout

Original issue's description:
> Add blink::WebSocketHandshakeThrottle
> 
> Add a facility for WebSocket handshakes to be delayed or cancelled by the
> embedder. By implementing blink::Platform::CreateWebSocketHandshakeThrottle()
> the embedder can supply an implementation of blink::WebSocketHandshakeThrottle
> to throttle WebSocket handshakes.
> 
> To avoid slowing down the normal case, the throttling runs in parallel with the
> handshake. Only access to the new connection from Javascript is delayed.
> 
> The default behaviour is to have no throttling.
> 
> The implementation is in
> blink::DocumentWebSocketChannel. DocumentWebSocketChannelTest has new tests for
> the new functionality.
> 
> This is part of the implementation of Safe Browsing for WebSockets. See the
> design doc at
> https://docs.google.com/document/d/1iR3XMIQukqlXb6ajIHE91apHZAxyF_wvRoB5JGeJYPs/edit
> 
> BUG=644744
> 
> Review-Url: https://codereview.chromium.org/2930263002
> Cr-Commit-Position: refs/heads/master@{#479709}
> Committed: https://chromium.googlesource.com/chromium/src/+/bf9d1c2f8e5ea0366b4b086c7d0541bdc15ab176

TBR=yhirano@chromium.org,haraken@chromium.org,ricea@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=644744
Review-Url: https://codereview.chromium.org/2939123002
Cr-Commit-Position: refs/heads/master@{#479750}
Committed: https://chromium.googlesource.com/chromium/src/+/82ffd4eac8d6534797d2c42fca69a8f158d3bd73

[brettw, 2017-06-15 17:43:48]

The CQ bit was checked by brettw@chromium.org

[brettw, 2017-06-15 17:43:49]

Created Revert of Add blink::WebSocketHandshakeThrottle

[commit-bot: I haz the power, 2017-06-15 17:44:12]

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, 2017-06-15 17:44:32]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1497548628667960, "parent_rev":
"ffff364f06b3fa261dcf249ded47675c2d0d48a3", "commit_rev":
"82ffd4eac8d6534797d2c42fca69a8f158d3bd73"}

[commit-bot: I haz the power, 2017-06-15 17:44:46]

Description was changed from

==========
Revert of Add blink::WebSocketHandshakeThrottle (patchset #3 id:40001 of
https://codereview.chromium.org/2930263002/ )

Reason for revert:
New header not added to build causes failures:

https://luci-logdog.appspot.com/v/?s=chromium%2Fbb%2Ftryserver.chromium.linux...

Original issue's description:
> Add blink::WebSocketHandshakeThrottle
> 
> Add a facility for WebSocket handshakes to be delayed or cancelled by the
> embedder. By implementing blink::Platform::CreateWebSocketHandshakeThrottle()
> the embedder can supply an implementation of blink::WebSocketHandshakeThrottle
> to throttle WebSocket handshakes.
> 
> To avoid slowing down the normal case, the throttling runs in parallel with
the
> handshake. Only access to the new connection from Javascript is delayed.
> 
> The default behaviour is to have no throttling.
> 
> The implementation is in
> blink::DocumentWebSocketChannel. DocumentWebSocketChannelTest has new tests
for
> the new functionality.
> 
> This is part of the implementation of Safe Browsing for WebSockets. See the
> design doc at
>
https://docs.google.com/document/d/1iR3XMIQukqlXb6ajIHE91apHZAxyF_wvRoB5JGeJY...
> 
> BUG=644744
> 
> Review-Url: https://codereview.chromium.org/2930263002
> Cr-Commit-Position: refs/heads/master@{#479709}
> Committed:
https://chromium.googlesource.com/chromium/src/+/bf9d1c2f8e5ea0366b4b086c7d05...

TBR=yhirano@chromium.org,haraken@chromium.org,ricea@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=644744
==========

to

==========
Revert of Add blink::WebSocketHandshakeThrottle (patchset #3 id:40001 of
https://codereview.chromium.org/2930263002/ )

Reason for revert:
New header not added to build causes failures:

https://luci-logdog.appspot.com/v/?s=chromium%2Fbb%2Ftryserver.chromium.linux...

Original issue's description:
> Add blink::WebSocketHandshakeThrottle
> 
> Add a facility for WebSocket handshakes to be delayed or cancelled by the
> embedder. By implementing blink::Platform::CreateWebSocketHandshakeThrottle()
> the embedder can supply an implementation of blink::WebSocketHandshakeThrottle
> to throttle WebSocket handshakes.
> 
> To avoid slowing down the normal case, the throttling runs in parallel with
the
> handshake. Only access to the new connection from Javascript is delayed.
> 
> The default behaviour is to have no throttling.
> 
> The implementation is in
> blink::DocumentWebSocketChannel. DocumentWebSocketChannelTest has new tests
for
> the new functionality.
> 
> This is part of the implementation of Safe Browsing for WebSockets. See the
> design doc at
>
https://docs.google.com/document/d/1iR3XMIQukqlXb6ajIHE91apHZAxyF_wvRoB5JGeJY...
> 
> BUG=644744
> 
> Review-Url: https://codereview.chromium.org/2930263002
> Cr-Commit-Position: refs/heads/master@{#479709}
> Committed:
https://chromium.googlesource.com/chromium/src/+/bf9d1c2f8e5ea0366b4b086c7d05...

TBR=yhirano@chromium.org,haraken@chromium.org,ricea@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=644744

Review-Url: https://codereview.chromium.org/2939123002
Cr-Commit-Position: refs/heads/master@{#479750}
Committed:
https://chromium.googlesource.com/chromium/src/+/82ffd4eac8d6534797d2c42fca69...
==========

[commit-bot: I haz the power, 2017-06-15 17:44:48]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/82ffd4eac8d6534797d2c42fca69...

[Adam Rice, 2017-06-16 10:20:03]

On 2017/06/15 17:44:48, commit-bot: I haz the power wrote:
> Committed patchset #1 (id:1) as
>
https://chromium.googlesource.com/chromium/src/+/82ffd4eac8d6534797d2c42fca69...

Relanded with BUILD.gn fix at https://codereview.chromium.org/2942173002