commit dcb434c11019afedcd5e45820e724b8ad9e6d396
author clamy <clamy@chromium.org> Thu Apr 16 19:29:16 2015
committer Commit bot <commit-bot@chromium.org> Thu Apr 16 19:29:32 2015
tree 3c1fa98a05546d1bf3b9befbd7405cf01602eae3
parent 3c011dd0a4d682397b7a1f3c9b786db68d7e967b

PlzNavigate: move ownership of the NavigationRequest to the FrameTreeNode

This CL moves the ownership of NavigationRequests from a map in NavigatorImpl
to the FrameTreeNode. This ensures that NavigationRequests are unique per
FrameTreeNode and are also properly deleted on destruction of the
FrameTreeNode. It also makes it easier to have PlzNavigate adapt to the
refactoring of DidStart/StopLoading happening in
https://codereview.chromium.org/1080143003/.

BUG=439423

Review URL: https://codereview.chromium.org/1080073004

Cr-Commit-Position: refs/heads/master@{#325498}