<!-- Please describe your changes on the following line: -->
Added a `TopLevelBrowsingContextId` type, which is a subtype of `BrowsingContextId` that only refers to top-level browsing contexts.
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Source-Repo: https://github.com/servo/servo
Source-Revision: a0d6d6883c3f2fde6f0f3e13712a569ce3aa41e5
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Now that script has `WindowProxy` rather than `BrowsingContext` objects, we can rename `Frame` in the constellation to `BrowsingContext`. In particular, this means that `FrameId`s are now `BrowsingContextid`s, which better captures their purpose (and they are used in a lot of places, not just the constellation).
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Source-Repo: https://github.com/servo/servo
Source-Revision: 837531992864f920342020462830b933d5ed0280
<!-- Please describe your changes on the following line: -->
Renamed `script::dom::BrowsingContext` to `script::dom::WindowProxy`.
The browsing context is mostly maintained in the constellation, not in script. It would be nice to rename `constellation::Frame` to `constellation::BrowsingContext`, but that will be very confusing if there are two `BrowsingContext` types.
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Source-Repo: https://github.com/servo/servo
Source-Revision: 34d0e59849a0a3e231e47fe10d66484340b8b80c
