| Index: third_party/WebKit/LayoutTests/external/wpt/common/performance-timeline-utils.js
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| diff --git a/third_party/WebKit/LayoutTests/external/wpt/common/performance-timeline-utils.js b/third_party/WebKit/LayoutTests/external/wpt/common/performance-timeline-utils.js
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| new file mode 100644
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| index 0000000000000000000000000000000000000000..268bb114722bb55bf3f89e30156b3833f63ab56f
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| --- /dev/null
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| +++ b/third_party/WebKit/LayoutTests/external/wpt/common/performance-timeline-utils.js
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| @@ -0,0 +1,40 @@
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| +var performanceNamespace = window.performance;
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| +var namespace_check = false;
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| +function wp_test(func, msg, properties)
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| +{
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| +  // only run the namespace check once
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| +  if (!namespace_check)
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| +  {
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| +    namespace_check = true;
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| +
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| +    if (performanceNamespace === undefined || performanceNamespace == null)
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| +    {
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| +      // show a single error that window.performance is undefined
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| +      test(function() { assert_true(performanceNamespace !== undefined && performanceNamespace != null, "window.performance is defined and not null"); }, "window.performance is defined and not null.", {author:"W3C http://www.w3.org/",help:"http://www.w3.org/TR/navigation-timing/#sec-window.performance-attribute",assert:"The window.performance attribute provides a hosting area for performance related attributes. "});
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| +    }
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| +  }
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| +
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| +  test(func, msg, properties);
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| +}
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| +
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| +function test_true(value, msg, properties)
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| +{
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| +  wp_test(function () { assert_true(value, msg); }, msg, properties);
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| +}
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| +
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| +function test_equals(value, equals, msg, properties)
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| +{
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| +  wp_test(function () { assert_equals(value, equals, msg); }, msg, properties);
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| +}
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| +
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| +// assert for every entry in `expectedEntries`, there is a matching entry _somewhere_ in `actualEntries`
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| +function test_entries(actualEntries, expectedEntries) {
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| +  test_equals(actualEntries.length, expectedEntries.length)
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| +  expectedEntries.forEach(function (expectedEntry) {
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| +    test_true(!!actualEntries.find(function (actualEntry) {
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| +      return typeof Object.keys(expectedEntry).find(function (key) {
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| +            return actualEntry[key] !== expectedEntry[key]
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| +          }) === 'undefined'
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| +    }))
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| +  })
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| +}
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| 
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