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A
A
All
right
so
so
this
has
been
presented
to
the
working
group
a
couple
of
times,
but
as
a
quick
recap
for
people
that
aren't
necessarily
familiar
with
it.
The
problem
that
we're
trying
to
solve
here
is
that
in
web
pages
today,
every
frame
was
basically
Island
into
itself.
A
The
performance
characteristics
of
each
page
are
sort
of
isolated,
every
frame,
rightly
within
that
frame,
and
you
need
to
explicitly
coordinate
with
embedded
content
if
you
want
to
actually
share
that
this
is.
This
is
certainly
a
problem
with
third
parties,
because
the
problem
of
explicitly
coordinating
with
every
possible
and
better
is
intractable.
A
So
we
want
to
come
up
with
a
standard
way
of
of
doing
this
that
maybe
can
be
implicit
because
in
the
end,
performance
problems
themselves
are
often
page
level
not
frame
level
and
the
the
top
level
page
really
needs
to
be
aware
of,
what's
going
on
in
the
whole
page
to
be
able
to
make
reasonable
decisions.
A
So
our
proposed
solution
is
to
basically
allow
embedded
content
to
opt
in
so
an
explicit
opt-in
to
implicit
sharing
of
performance
timeline
data
with
your
embedders
there's
a
link
here
to
the
actual
concrete
proposal.
I'll
share
the
slides
afterwards,
once
I
can
move
them
to
somewhere
shareable,
but
this
is
now
underway,
so
jeffree's
been
working
on
actually
implementing
this
we're
doing
this
in
a
couple
of
different
stages.
So
immediately
we
are
working
on
just
same
origin
frames.
A
So
basically,
if
you
have
same
origin
content
on
your
page,
the
ability
to
easily
say
please
just
get
me
all
of
their
all.
The
travel
entries
from
all
same
origin
frames
starting
up
with
just
get
entries,
but
then,
hopefully
moving
on
to
your
performance
Observer
as
a
second
step
and
then
finally,
we're
going
to
extend
this
to
cross-origin
frames
with
the
actual
explicit
opt-in
so
to
make
each
of
those
a
bit
more
concrete,
same
origin
frames.
A
We
should
be
able
to
get
this
out
in
Chrome
m110,
which
is
just
in
a
couple
of
months
behind
the
flag.
Obviously,
and
the
idea
is
that
performance.get
entries
get
entries
by
name
get
entries
by
type
we'll
just
have
a
Boolean
flag.
That
says,
please
also
include
all
trial
frames
and
if
you
do
that,
you
get
all
performance
entries
from
all
same
origin
frames
on
the
page,
each
one,
including
a
reference
to
that
window,
object
so
that
you
can
refer
back
to
back
to
where
they
originated
step.
A
This
is
a
more
complicated
example
that
I've
posted
in
or
pasted
in
from
The
Proposal
dock,
but
the
the
green
link
on
the
bottom
here
shows
that
when
you
make
your
Observer,
you
would
just
say
include
children,
true
as
part
of
these
Observer
options,
and
then
again
you
could
do
things
with
the
with
the
source
attribute
on
each
of
the
entries.
So
in
this
case
this
basically
just
groups
them
all
together.
A
And
then,
finally,
the
last
step
of
this
is
going
to
be
due
to
this
cross
origin,
which
is
exactly
the
same
mechanism,
except
that
the
we
require
that
the
embedded
content
send
a
document
policy
in
the
headers
saying
who
would
you
like
to
share
your
timeline
with
right
by
default?
A
This
is
nobody,
but
you
could
share
it
with
star
if
you
expect
any
bid,
it
everywhere
or
you
can
provide
a
list
of
approved
embedders
and
anybody
else
would
not
be
able
to
get
those
timeline
entries
and
then
it
will
work
exactly
the
same
way,
except
that
when
we
walk
the
frame
free,
we'll
find
all
of
the
frames
that
have
opted
in
so
questions
for
the
group
for
discussion
here.
A
So
we're
doing
this
deliberately
in
this
order,
in
the
hopes
that
maybe
some
of
these
checkpoints
might
be
useful
to
experiment
with,
on
their
own.
So
I'd
like
to
hear
back
from
people
who
who
might
actually
end
up
using
this,
whether
same
origin
frames,
is
a
useful
sort
of
like
midpoint
like.
Would
you
check
that
and
also
would
it
be
worth
developing
a
polyfill
to
do
the
whole
thing?
A
That
is
the
end
of
the
presentation.
If
you
want
to
stop
the
recording
before
I
think
there
were
a
couple
of
comments
and
now
a
hand.