Auto merge of #11179 - asajeffrey:webdriver-resize-window, r=jgraham

Implemented webdriver SetWindowSize.

Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data:
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #10467 (github issue number if applicable).

Either:
- [ ] There are tests for these changes OR
- [X] These changes do not require tests because the new tests are in https://github.com/w3c/web-platform-tests/pull/3024

Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process.

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components/servo/Cargo.lock

@@ -2483,6 +2483,7 @@ name = "webdriver_server"
 version = "0.0.1"
 dependencies = [
  "compositing 0.0.1",
+ "euclid 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.9.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "image 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.2.2 (git+https://github.com/servo/ipc-channel)",