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Auto merge of #15519 - gterzian:implement_structuredclone_callbacks, r=jdm

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implement structured clone callbacks - support Blob cloning

<!-- Please describe your changes on the following line: -->
1. Implement stubs for structured clone callbacks.
2. Support Blob cloning.

Partial implementation of https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Structured_clone_algorithm

---
<!-- 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
- [ ] These changes fix #15021 (github issue number if applicable).

<!-- Either: -->
- [ ] There are tests for these changes OR
- [ ] These changes do not require tests because _____

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This commit is contained in:
bors-servo 2017-03-21 21:17:25 -07:00 • committed by GitHub
commit 7be9f0e7c4
4 changed files with 212 additions and 7 deletions
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35
tests/wpt/web-platform-tests/html/infrastructure/safe-passing-of-structured-data/structured_clone_blob.html Normal file
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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Safe passing of structured data - Blob</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<script>
async_test(function(t) {
var blob = new Blob(['<a id="a"><b id="b">hey!</b></a>'], {type:"text/plain"});
window.addEventListener("message", this.step_func(function(msg) {
assert_true(msg.data instanceof Blob);
assert_equals(msg.data.size, blob.size);
assert_equals(msg.data.type, blob.type);
var cloned_content, original_content;
var reader = new FileReader();
reader.addEventListener("loadend", this.step_func(function() {
original_content = reader.result;
var reader2 = new FileReader();
reader2.addEventListener("loadend", this.step_func_done(function() {
cloned_content = reader2.result;
assert_equals(typeof cloned_content, typeof original_content);
assert_equals(cloned_content, original_content);
}));
reader2.readAsText(msg.data);
}));
reader.readAsText(blob);
}), false);
window.postMessage(blob, '*');
}, "Cloning a Blob into the same realm");
</script>
</body>
</html>