Turn off incremental wrapper tracing by default

Turn off incremental wrapper tracing by default

With the flag on the blink tests fail because blink is not prepared for v8
behaving incrementally.

In order to land and enable incremental wrapper tracing both in v8 smoothly and
blink we need to:

1. Land ScriptWrappableVisitorTest (http://crrev.com/2301213003)
2. Land write barriers implementation with more tests
3. Land write barriers installations
4. Enable incremental wrapper tracing on v8 side
5. Canary the heck out of this :)

This way the tests should be passing and chrome shouldn't crash at any given
moment.

LOG=no
BUG=468240
NOTRY=true

Committed: https://crrev.com/883e0e70369210b5af17ce86e8de3e0ce8119911
Cr-Commit-Position: refs/heads/master@{#39132}

[Marcel Hlopko, 2016-09-02 11:46:34]

hlopko@chromium.org changed reviewers:
+ mlippautz@chromium.org

[Michael Lippautz, 2016-09-02 11:48:34]

lgtm

[Marcel Hlopko, 2016-09-02 12:03:11]

Description was changed from

==========
Turn off incremental wrapper tracing by default

With the flag on the blink tests fail because blink is not prepared for v8
behaving incrementally.

In order to land and enable incremental wrapper tracing both in v8 smoothly and
blink we need to:

1. Land ScriptWrappableVisitorTest (http://crrev.com/2301213003)
2. Land write barriers implementation with more tests
3. Land write barriers installations
4. Enable incremental wrapper tracing on v8 side
5. Canary the heck out of this :)

This way the tests should be passing and chrome shouldn't crash at any given
moment.

LOG=no
BUG=468240
==========

to

==========
Turn off incremental wrapper tracing by default

With the flag on the blink tests fail because blink is not prepared for v8
behaving incrementally.

In order to land and enable incremental wrapper tracing both in v8 smoothly and
blink we need to:

1. Land ScriptWrappableVisitorTest (http://crrev.com/2301213003)
2. Land write barriers implementation with more tests
3. Land write barriers installations
4. Enable incremental wrapper tracing on v8 side
5. Canary the heck out of this :)

This way the tests should be passing and chrome shouldn't crash at any given
moment.

LOG=no
BUG=468240
NOTRY=true
==========

[Marcel Hlopko, 2016-09-02 12:03:18]

The CQ bit was checked by hlopko@chromium.org

[commit-bot: I haz the power, 2016-09-02 12:03:29]

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, 2016-09-02 12:06:09]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-02 12:06:36]

Description was changed from

==========
Turn off incremental wrapper tracing by default

With the flag on the blink tests fail because blink is not prepared for v8
behaving incrementally.

In order to land and enable incremental wrapper tracing both in v8 smoothly and
blink we need to:

1. Land ScriptWrappableVisitorTest (http://crrev.com/2301213003)
2. Land write barriers implementation with more tests
3. Land write barriers installations
4. Enable incremental wrapper tracing on v8 side
5. Canary the heck out of this :)

This way the tests should be passing and chrome shouldn't crash at any given
moment.

LOG=no
BUG=468240
NOTRY=true
==========

to

==========
Turn off incremental wrapper tracing by default

With the flag on the blink tests fail because blink is not prepared for v8
behaving incrementally.

In order to land and enable incremental wrapper tracing both in v8 smoothly and
blink we need to:

1. Land ScriptWrappableVisitorTest (http://crrev.com/2301213003)
2. Land write barriers implementation with more tests
3. Land write barriers installations
4. Enable incremental wrapper tracing on v8 side
5. Canary the heck out of this :)

This way the tests should be passing and chrome shouldn't crash at any given
moment.

LOG=no
BUG=468240
NOTRY=true

Committed: https://crrev.com/883e0e70369210b5af17ce86e8de3e0ce8119911
Cr-Commit-Position: refs/heads/master@{#39132}
==========

[commit-bot: I haz the power, 2016-09-02 12:06:37]

Patchset 1 (id:??) landed as
https://crrev.com/883e0e70369210b5af17ce86e8de3e0ce8119911
Cr-Commit-Position: refs/heads/master@{#39132}