Remove origins from the PermissionService interface messages.

Cq-Include-Trybots: master.tryserver.chromium.linux:linux_site_isolation
Change-Id: I392aa805b7d62816624cd944113c2132832dcf09
Bug: 779444
Reviewed-on: https://chromium-review.googlesource.com/706883
Commit-Queue: Sam McNally <sammc@chromium.org>
Reviewed-by: Avi Drissman <avi@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#523033}

• content/browser/permissions/permission_service_context.cc[diff]
• content/browser/permissions/permission_service_context.h[diff]
• content/browser/permissions/permission_service_impl.cc[diff]
• content/browser/permissions/permission_service_impl.h[diff]
• content/browser/permissions/permission_service_impl_unittest.cc[diff]
• content/browser/renderer_interface_binders.cc[diff]
• content/renderer/media/media_permission_dispatcher.cc[diff]
• third_party/WebKit/Source/modules/accessibility/AXObjectCacheImpl.cpp[diff]
• third_party/WebKit/Source/modules/notifications/NotificationManager.cpp[diff]
• third_party/WebKit/Source/modules/permissions/PermissionStatus.cpp[diff]
• third_party/WebKit/Source/modules/permissions/Permissions.cpp[diff]
• third_party/WebKit/Source/modules/quota/StorageManager.cpp[diff]
• third_party/WebKit/Source/modules/webmidi/MIDIAccessInitializer.cpp[diff]
• third_party/WebKit/public/platform/modules/permissions/permission.mojom[diff]