Merge to 3071 "[DevTools] Ensure that tab agent hosts get "page" type"

Merge to 3071 "[DevTools] Ensure that tab agent hosts get "page" type"

If we were to create DevToolsAgentHost for a WebContents
before appending that to a tab strip, we wrongly assigned
"other" type to it. This happens, for example, when devtools
is discovering all agent hosts for newly created web contents.

Regressed in crrev.com/7a0e557c4434a838ab29021ae039504fbab4f564

BUG=717003
Review-Url: https://codereview.chromium.org/2858763002
Cr-Commit-Position: refs/heads/master@{#468815}
(cherry picked from commit 16fd697aa90b4a2dd30ff37ae51fd52a7c157a98)

TBR=pfeldman

Review-Url: https://codereview.chromium.org/2884103002 .
Cr-Commit-Position: refs/branch-heads/3071@{#570}
Cr-Branched-From: a106f0abbf69dad349d4aaf4bcc4f5d376dd2377-refs/heads/master@{#464641}
Committed: https://chromium.googlesource.com/chromium/src/+/d1cdb1eaec9319ade2c8bfe46b3b8b9ea60bd346

[dgozman, 2017-05-15 22:36:19]

Description was changed from

==========
Merge to 3071 "[DevTools] Ensure that tab agent hosts get "page" type"

If we were to create DevToolsAgentHost for a WebContents
before appending that to a tab strip, we wrongly assigned
"other" type to it. This happens, for example, when devtools
is discovering all agent hosts for newly created web contents.

Regressed in crrev.com/7a0e557c4434a838ab29021ae039504fbab4f564

BUG=717003

Review-Url: https://codereview.chromium.org/2858763002
Cr-Commit-Position: refs/heads/master@{#468815}
(cherry picked from commit 16fd697aa90b4a2dd30ff37ae51fd52a7c157a98)
==========

to

==========
Merge to 3071 "[DevTools] Ensure that tab agent hosts get "page" type"

If we were to create DevToolsAgentHost for a WebContents
before appending that to a tab strip, we wrongly assigned
"other" type to it. This happens, for example, when devtools
is discovering all agent hosts for newly created web contents.

Regressed in crrev.com/7a0e557c4434a838ab29021ae039504fbab4f564

BUG=717003

Review-Url: https://codereview.chromium.org/2858763002
Cr-Commit-Position: refs/heads/master@{#468815}
(cherry picked from commit 16fd697aa90b4a2dd30ff37ae51fd52a7c157a98)

TBR=pfeldman
==========

[dgozman, 2017-05-15 22:37:00]

Description was changed from

==========
Merge to 3071 "[DevTools] Ensure that tab agent hosts get "page" type"

If we were to create DevToolsAgentHost for a WebContents
before appending that to a tab strip, we wrongly assigned
"other" type to it. This happens, for example, when devtools
is discovering all agent hosts for newly created web contents.

Regressed in crrev.com/7a0e557c4434a838ab29021ae039504fbab4f564

BUG=717003

Review-Url: https://codereview.chromium.org/2858763002
Cr-Commit-Position: refs/heads/master@{#468815}
(cherry picked from commit 16fd697aa90b4a2dd30ff37ae51fd52a7c157a98)

TBR=pfeldman
==========

to

==========
Merge to 3071 "[DevTools] Ensure that tab agent hosts get "page" type"

If we were to create DevToolsAgentHost for a WebContents
before appending that to a tab strip, we wrongly assigned
"other" type to it. This happens, for example, when devtools
is discovering all agent hosts for newly created web contents.

Regressed in crrev.com/7a0e557c4434a838ab29021ae039504fbab4f564

BUG=717003

Review-Url: https://codereview.chromium.org/2858763002
Cr-Commit-Position: refs/heads/master@{#468815}
(cherry picked from commit 16fd697aa90b4a2dd30ff37ae51fd52a7c157a98)

TBR=pfeldman

Review-Url: https://codereview.chromium.org/2884103002 .
Cr-Commit-Position: refs/branch-heads/3071@{#570}
Cr-Branched-From:
a106f0abbf69dad349d4aaf4bcc4f5d376dd2377-refs/heads/master@{#464641}
Committed:
https://chromium.googlesource.com/chromium/src/+/d1cdb1eaec9319ade2c8bfe46b3b...
==========

[dgozman, 2017-05-15 22:37:01]

Committed patchset #1 (id:1) manually as
d1cdb1eaec9319ade2c8bfe46b3b8b9ea60bd346.