Revert of Collect type profile for DevTools.

Revert of Collect type profile for DevTools. (patchset #40 id:750001 of https://codereview.chromium.org/2707873002/ )

Reason for revert:
gcc bot is now flaky https://build.chromium.org/p/client.v8/builders/V8%20Linux%20gcc%204.8/builds/11863

Original issue's description:
> Collect type profile for DevTools
> 
> Collect type information for JavaScript variables and display it 
> in Chrome DevTools. 
> Design Doc: https://docs.google.com/a/google.com/document/d/1O1uepXZXBI6IwiawTrYC3ohhiNgzkyTdjn3R8ysbYgk/edit?usp=sharing
> 
> When debugging JavaScript, it’s helpful to know the type of
> a variable, parameter, and return values. JavaScript is 
> dynamically typed, and for complex 
> source code it’s often hard to infer types. With type profiling, we 
> can provide type information to JavaScript developers.
> 
> This CL is a proof of concept. It collects type profile for 
> assignments and simply prints the types to stdout.
> 
> The output looks something like this: 
> 
> #my_var1
>   #Object
>   #number
>   #string
>   #number
>   #undefined
>   #string
>   #Object
>   #Object
> 
> 
> We use an extra slot in the feedback vector of assignments to 
> carry the list of types for that assignment. The extra slot is
> only added when the flag --type-profile is given. 
> 
> 
> Missing work:
> * Collect data for parameters and return values (currently only assignments). 
> * Remove duplicates from the list of collected types and use a common base class.
> * Add line numbers or source position instead of the variable name.
> 
> 
> 
> BUG=v8:5935
> 
> Review-Url: https://codereview.chromium.org/2707873002
> Cr-Original-Commit-Position: refs/heads/master@{#43791}
> Committed: https://chromium.googlesource.com/v8/v8/+/0332bebde99d0f9a5a8326382f5f37cc26224ae0
> Review-Url: https://codereview.chromium.org/2707873002
> Cr-Commit-Position: refs/heads/master@{#43804}
> Committed: https://chromium.googlesource.com/v8/v8/+/6cf880f4b84c533d4bb139d33c1369e309d1c579

TBR=yangguo@chromium.org,mvstanton@chromium.org,rmcilroy@chromium.org,mstarzinger@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5935
Review-Url: https://codereview.chromium.org/2754573002
Cr-Commit-Position: refs/heads/master@{#43805}
Committed: https://chromium.googlesource.com/v8/v8/+/14d0930d40d179cd81bffe601ec3ce9440643764

[Franzi, 2017-03-14 21:32:17]

The CQ bit was checked by franzih@chromium.org

[Franzi, 2017-03-14 21:32:18]

Created Revert of Collect type profile for DevTools.

[commit-bot: I haz the power, 2017-03-14 21:32:24]

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, 2017-03-14 21:32:33]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1489527137557230, "parent_rev":
"6cf880f4b84c533d4bb139d33c1369e309d1c579", "commit_rev":
"14d0930d40d179cd81bffe601ec3ce9440643764"}

[commit-bot: I haz the power, 2017-03-14 21:32:37]

Description was changed from

==========
Revert of Collect type profile for DevTools. (patchset #40 id:750001 of
https://codereview.chromium.org/2707873002/ )

Reason for revert:
gcc bot is now flaky
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20gcc%204.8/builds...

Original issue's description:
> Collect type profile for DevTools
> 
> Collect type information for JavaScript variables and display it 
> in Chrome DevTools. 
> Design Doc:
https://docs.google.com/a/google.com/document/d/1O1uepXZXBI6IwiawTrYC3ohhiNgz...
> 
> When debugging JavaScript, it’s helpful to know the type of
> a variable, parameter, and return values. JavaScript is 
> dynamically typed, and for complex 
> source code it’s often hard to infer types. With type profiling, we 
> can provide type information to JavaScript developers.
> 
> This CL is a proof of concept. It collects type profile for 
> assignments and simply prints the types to stdout.
> 
> The output looks something like this: 
> 
> #my_var1
>   #Object
>   #number
>   #string
>   #number
>   #undefined
>   #string
>   #Object
>   #Object
> 
> 
> We use an extra slot in the feedback vector of assignments to 
> carry the list of types for that assignment. The extra slot is
> only added when the flag --type-profile is given. 
> 
> 
> Missing work:
> * Collect data for parameters and return values (currently only assignments). 
> * Remove duplicates from the list of collected types and use a common base
class.
> * Add line numbers or source position instead of the variable name.
> 
> 
> 
> BUG=v8:5935
> 
> Review-Url: https://codereview.chromium.org/2707873002
> Cr-Original-Commit-Position: refs/heads/master@{#43791}
> Committed:
https://chromium.googlesource.com/v8/v8/+/0332bebde99d0f9a5a8326382f5f37cc262...
> Review-Url: https://codereview.chromium.org/2707873002
> Cr-Commit-Position: refs/heads/master@{#43804}
> Committed:
https://chromium.googlesource.com/v8/v8/+/6cf880f4b84c533d4bb139d33c1369e309d...

TBR=yangguo@chromium.org,mvstanton@chromium.org,rmcilroy@chromium.org,mstarzi...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5935
==========

to

==========
Revert of Collect type profile for DevTools. (patchset #40 id:750001 of
https://codereview.chromium.org/2707873002/ )

Reason for revert:
gcc bot is now flaky
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20gcc%204.8/builds...

Original issue's description:
> Collect type profile for DevTools
> 
> Collect type information for JavaScript variables and display it 
> in Chrome DevTools. 
> Design Doc:
https://docs.google.com/a/google.com/document/d/1O1uepXZXBI6IwiawTrYC3ohhiNgz...
> 
> When debugging JavaScript, it’s helpful to know the type of
> a variable, parameter, and return values. JavaScript is 
> dynamically typed, and for complex 
> source code it’s often hard to infer types. With type profiling, we 
> can provide type information to JavaScript developers.
> 
> This CL is a proof of concept. It collects type profile for 
> assignments and simply prints the types to stdout.
> 
> The output looks something like this: 
> 
> #my_var1
>   #Object
>   #number
>   #string
>   #number
>   #undefined
>   #string
>   #Object
>   #Object
> 
> 
> We use an extra slot in the feedback vector of assignments to 
> carry the list of types for that assignment. The extra slot is
> only added when the flag --type-profile is given. 
> 
> 
> Missing work:
> * Collect data for parameters and return values (currently only assignments). 
> * Remove duplicates from the list of collected types and use a common base
class.
> * Add line numbers or source position instead of the variable name.
> 
> 
> 
> BUG=v8:5935
> 
> Review-Url: https://codereview.chromium.org/2707873002
> Cr-Original-Commit-Position: refs/heads/master@{#43791}
> Committed:
https://chromium.googlesource.com/v8/v8/+/0332bebde99d0f9a5a8326382f5f37cc262...
> Review-Url: https://codereview.chromium.org/2707873002
> Cr-Commit-Position: refs/heads/master@{#43804}
> Committed:
https://chromium.googlesource.com/v8/v8/+/6cf880f4b84c533d4bb139d33c1369e309d...

TBR=yangguo@chromium.org,mvstanton@chromium.org,rmcilroy@chromium.org,mstarzi...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5935

Review-Url: https://codereview.chromium.org/2754573002
Cr-Commit-Position: refs/heads/master@{#43805}
Committed:
https://chromium.googlesource.com/v8/v8/+/14d0930d40d179cd81bffe601ec3ce94406...
==========

[commit-bot: I haz the power, 2017-03-14 21:32:38]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/14d0930d40d179cd81bffe601ec3ce94406...