Revert of [Bindings] Create and use V8 context snapshots

Revert of [Bindings] Create and use V8 context snapshots (patchset #22 id:520001 of https://codereview.chromium.org/2841443005/ )

Reason for revert:
Causes compile to fail on MSAN because of usage
of uninitialized memory: 

https://luci-logdog.appspot.com/v/?s=chromium%2Fbb%2Fchromium.webkit%2FWebKit_Linux_Trusty_MSAN%2F2265%2F%2B%2Frecipes%2Fsteps%2Fcompile%2F0%2Fstdout


Original issue's description:
> Create and use V8 context snapshots.
> 
> This CL does two things.
> 
> 1. In compile time, creates a snapshot file, which consists of V8 contexts.
> 2. Creates v8::Context from the snapshot in LocalWindowProxy::CreateContext().
> 
> We expect this speeds up context creation for 3 times faster on Android.
> Detailed information is described in the design doc [1].
> 
> 
> [1] Design doc: https://docs.google.com/document/d/1jpQQX0piaxcHJPWakp_Kr_03g5Gnma5h5-Kdlqu7jVQ/edit#heading=h.k6iklq6rvd30
> 
> 
> 
> Test expectations are changed due to http://crbug.com/705364
> 
> BUG=588893, 617892, 705364
> 
> Review-Url: https://codereview.chromium.org/2841443005
> Cr-Commit-Position: refs/heads/master@{#490329}
> Committed: https://chromium.googlesource.com/chromium/src/+/54afe29f866e4c3878242de7a78941fc363791e9

TBR=jochen@chromium.org,agrieve@chromium.org,brettw@chromium.org,dcheng@chromium.org,eroman@chromium.org,haraken@chromium.org,jam@chromium.org,mlippautz@chromium.org,rkc@chromium.org,thakis@chromium.org,yukishiino@chromium.org,kinuko@chromium.org,peria@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=588893, 617892, 705364
Review-Url: https://codereview.chromium.org/2989793003
Cr-Commit-Position: refs/heads/master@{#490339}
Committed: https://chromium.googlesource.com/chromium/src/+/45b25591b1a63b27f59b95aee8ad0d88aa9833f8

[blundell, 2017-07-28 09:47:03]

The CQ bit was checked by blundell@chromium.org

[blundell, 2017-07-28 09:47:04]

Created Revert of [Bindings] Create and use V8 context snapshots

[commit-bot: I haz the power, 2017-07-28 09:47:13]

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, 2017-07-28 09:48:19]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1501235223555460, "parent_rev":
"1bcf48d2b98be4823891f46ef2b402d4e157d630", "commit_rev":
"45b25591b1a63b27f59b95aee8ad0d88aa9833f8"}

[commit-bot: I haz the power, 2017-07-28 09:48:44]

Description was changed from

==========
Revert of [Bindings] Create and use V8 context snapshots (patchset #22 id:520001
of https://codereview.chromium.org/2841443005/ )

Reason for revert:
Causes compile to fail on MSAN because of usage
of uninitialized memory: 

https://luci-logdog.appspot.com/v/?s=chromium%2Fbb%2Fchromium.webkit%2FWebKit...


Original issue's description:
> Create and use V8 context snapshots.
> 
> This CL does two things.
> 
> 1. In compile time, creates a snapshot file, which consists of V8 contexts.
> 2. Creates v8::Context from the snapshot in LocalWindowProxy::CreateContext().
> 
> We expect this speeds up context creation for 3 times faster on Android.
> Detailed information is described in the design doc [1].
> 
> 
> [1] Design doc:
https://docs.google.com/document/d/1jpQQX0piaxcHJPWakp_Kr_03g5Gnma5h5-Kdlqu7j...
> 
> 
> 
> Test expectations are changed due to http://crbug.com/705364
> 
> BUG=588893, 617892, 705364
> 
> Review-Url: https://codereview.chromium.org/2841443005
> Cr-Commit-Position: refs/heads/master@{#490329}
> Committed:
https://chromium.googlesource.com/chromium/src/+/54afe29f866e4c3878242de7a789...

TBR=jochen@chromium.org,agrieve@chromium.org,brettw@chromium.org,dcheng@chrom...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=588893, 617892, 705364
==========

to

==========
Revert of [Bindings] Create and use V8 context snapshots (patchset #22 id:520001
of https://codereview.chromium.org/2841443005/ )

Reason for revert:
Causes compile to fail on MSAN because of usage
of uninitialized memory: 

https://luci-logdog.appspot.com/v/?s=chromium%2Fbb%2Fchromium.webkit%2FWebKit...


Original issue's description:
> Create and use V8 context snapshots.
> 
> This CL does two things.
> 
> 1. In compile time, creates a snapshot file, which consists of V8 contexts.
> 2. Creates v8::Context from the snapshot in LocalWindowProxy::CreateContext().
> 
> We expect this speeds up context creation for 3 times faster on Android.
> Detailed information is described in the design doc [1].
> 
> 
> [1] Design doc:
https://docs.google.com/document/d/1jpQQX0piaxcHJPWakp_Kr_03g5Gnma5h5-Kdlqu7j...
> 
> 
> 
> Test expectations are changed due to http://crbug.com/705364
> 
> BUG=588893, 617892, 705364
> 
> Review-Url: https://codereview.chromium.org/2841443005
> Cr-Commit-Position: refs/heads/master@{#490329}
> Committed:
https://chromium.googlesource.com/chromium/src/+/54afe29f866e4c3878242de7a789...

TBR=jochen@chromium.org,agrieve@chromium.org,brettw@chromium.org,dcheng@chrom...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=588893, 617892, 705364

Review-Url: https://codereview.chromium.org/2989793003
Cr-Commit-Position: refs/heads/master@{#490339}
Committed:
https://chromium.googlesource.com/chromium/src/+/45b25591b1a63b27f59b95aee8ad...
==========

[commit-bot: I haz the power, 2017-07-28 09:48:46]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/45b25591b1a63b27f59b95aee8ad...

[haraken, 2017-07-28 09:52:26]

LGTM to revert...

[Yuki, 2017-07-28 12:03:18]

LGTM.