commit ee1c707a83bef0504aaabd120d44fbcef56f7380
author Yutaka Hirano <yhirano@chromium.org> Thu Jun 01 07:57:17 2017
committer Commit Bot <commit-bot@chromium.org> Thu Jun 01 21:32:28 2017
tree 463edcdc602596d4456f20c9491292dc1ccff3e9
parent c6aec95542def2e52993158a0551984c24c3943c

Introduce FetchContext::Detach

In order to notify FrameFetchContext of frame detach event, this CL adds a
new function. FrameFetchContext::document_ has been a weak member due to a
reference cycle. This CL also makes the reference strong and break the cycle
explicitly on the event.

Bug: 695939
Change-Id: I0395c649c1da4797be3f9055ee38c86ff5e6e844
Reviewed-on: https://chromium-review.googlesource.com/516843
Reviewed-by: Nate Chapin <japhet@chromium.org>
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Commit-Queue: Yutaka Hirano <yhirano@chromium.org>
Cr-Commit-Position: refs/heads/master@{#476443}