Reland of [Telemetry] Remove logic of pulling out user_agent_type from page_set

Reland of [Telemetry] Remove logic of  pulling out user_agent_type from page_set (patchset #1 id:1 of https://codereview.chromium.org/2451713003/ )

Reason for revert:
False alert.

Original issue's description:
> Revert of [Telemetry] Remove logic of  pulling out user_agent_type from page_set (patchset #1 id:1 of https://codereview.chromium.org/2447563003/ )
> 
> Reason for revert:
> Cause failure on waterfall.
> 
> Original issue's description:
> > [Telemetry] Remove logic of  pulling out user_agent_type from page_set
> > 
> > BUG=chromium:439512
> > 
> > Committed: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+/7aa9328a154ab90699470e084506c437c7426685
> 
> TBR=aiolos@chromium.org,nednguyen@google.com
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=chromium:439512
> 
> Committed: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+/4440fabbbce3cd9fdb57116ecb9e190a559883ec

TBR=aiolos@chromium.org,nednguyen@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:439512
Committed: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+/d1def565a963d43eafecc5dd4a0b404cbf7bb2a2

[nednguyen, 2016-10-25 12:37:53]

The CQ bit was checked by nednguyen@google.com

[nednguyen, 2016-10-25 12:37:53]

Created Reland of [Telemetry] Remove logic of  pulling out user_agent_type from
page_set

[commit-bot: I haz the power, 2016-10-25 12:37:58]

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, 2016-10-25 12:38:05]

Description was changed from

==========
Reland of [Telemetry] Remove logic of  pulling out user_agent_type from page_set
(patchset #1 id:1 of https://codereview.chromium.org/2451713003/ )

Reason for revert:
False alert.

Original issue's description:
> Revert of [Telemetry] Remove logic of  pulling out user_agent_type from
page_set (patchset #1 id:1 of https://codereview.chromium.org/2447563003/ )
> 
> Reason for revert:
> Cause failure on waterfall.
> 
> Original issue's description:
> > [Telemetry] Remove logic of  pulling out user_agent_type from page_set
> > 
> > BUG=chromium:439512
> > 
> > Committed:
https://chromium.googlesource.com/external/github.com/catapult-project/catapu...
> 
> TBR=aiolos@chromium.org,nednguyen@google.com
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=chromium:439512
> 
> Committed:
https://chromium.googlesource.com/external/github.com/catapult-project/catapu...

TBR=aiolos@chromium.org,nednguyen@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:439512
==========

to

==========
Reland of [Telemetry] Remove logic of  pulling out user_agent_type from page_set
(patchset #1 id:1 of https://codereview.chromium.org/2451713003/ )

Reason for revert:
False alert.

Original issue's description:
> Revert of [Telemetry] Remove logic of  pulling out user_agent_type from
page_set (patchset #1 id:1 of https://codereview.chromium.org/2447563003/ )
> 
> Reason for revert:
> Cause failure on waterfall.
> 
> Original issue's description:
> > [Telemetry] Remove logic of  pulling out user_agent_type from page_set
> > 
> > BUG=chromium:439512
> > 
> > Committed:
https://chromium.googlesource.com/external/github.com/catapult-project/catapu...
> 
> TBR=aiolos@chromium.org,nednguyen@google.com
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=chromium:439512
> 
> Committed:
https://chromium.googlesource.com/external/github.com/catapult-project/catapu...

TBR=aiolos@chromium.org,nednguyen@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:439512

Committed:
https://chromium.googlesource.com/external/github.com/catapult-project/catapu...
==========

[commit-bot: I haz the power, 2016-10-25 12:38:06]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/external/github.com/catapult-project/catapu...