Rename content::PermissionManager into content::PermissionControllerDelegate

One-pager describing this refactoring: https://goo.gl/24gkCb

This is a follow-up to the crrev.com/574691
This patch:
- renames content::PermissionManager into content::PermissionControllerDelegate
- renames BrowserContext::GetPermissionManager() into BrowserContext::GetPermissionControllerDelegate
- renames content::TestBrowserContext::SetPermissionManager into TestBrowserContext::SetPermissionControllerDelegate

R=dgozman
TBR=boliu, scottmg, xunjieli, spang, thestig
BUG=631464

Change-Id: I01ca186635898d250877e7462a731e47ffae31c3
Reviewed-on: https://chromium-review.googlesource.com/1136858
Commit-Queue: Andrey Lushnikov <lushnikov@chromium.org>
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#575393}
52 files changed