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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo
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commit
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<!DOCTYPE HTML>
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<html>
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<!--
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Sanity test that we can compute dominator trees from a heap snapshot in a web window.
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-->
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<head>
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<meta charset="utf-8">
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<title>ChromeUtils.saveHeapSnapshot test</title>
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<script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css">
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</head>
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<body>
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<pre id="test">
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<script>
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SimpleTest.waitForExplicitFinish();
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window.onload = function() {
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const path = ChromeUtils.saveHeapSnapshot({ runtime: true });
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const snapshot = ChromeUtils.readHeapSnapshot(path);
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const dominatorTree = snapshot.computeDominatorTree();
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ok(dominatorTree);
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ok(dominatorTree instanceof DominatorTree);
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let threw = false;
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try {
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new DominatorTree();
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} catch (e) {
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threw = true;
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}
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ok(threw, "Constructor shouldn't be usable");
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SimpleTest.finish();
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};
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</script>
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</pre>
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</body>
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</html>
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