Add a function that computes contribution of selected events to EQT.

tracing/tracing/metrics/system_health/estimated_input_latency_metric_test.html

Index: tracing/tracing/metrics/system_health/estimated_input_latency_metric_test.html
diff --git a/tracing/tracing/metrics/system_health/estimated_input_latency_metric_test.html b/tracing/tracing/metrics/system_health/estimated_input_latency_metric_test.html
index 265692b9b26f980f8a4dbf20265dd88321785b73..617ff743257ca5a310ebb8de7979029431cfd022 100644
--- a/tracing/tracing/metrics/system_health/estimated_input_latency_metric_test.html
+++ b/tracing/tracing/metrics/system_health/estimated_input_latency_metric_test.html
@@ -36,7 +36,7 @@ tr.b.unittest.testSuite(function() {
     }));
   }
 
-  test('estimatedInputLatency', function() {
+  test('expectedQueueingTime', function() {
     let model = tr.c.TestUtils.newModel((model) => {
       let rendererProcess = model.getOrCreateProcess(1984);
       let mainThread = rendererProcess.getOrCreateThread(2);
@@ -62,7 +62,7 @@ tr.b.unittest.testSuite(function() {
       }));
     });
     let values = new tr.v.HistogramSet();
-    tr.metrics.sh.estimatedInputLatency(values, model);
+    tr.metrics.sh.expectedQueueingTimeMetric(values, model);
     let interactiveEQT = values.getHistogramNamed(
         'interactive:500ms_window:renderer_eqt');
     assert.equal(0.1, interactiveEQT.average);
@@ -71,7 +71,7 @@ tr.b.unittest.testSuite(function() {
     assert.equal(10, totalEQT.average);
   });
 
-  test('estimatedInputLatency_noInteractive', function() {
+  test('expectedQueueingTime_noInteractive', function() {
     let model = tr.c.TestUtils.newModel((model) => {
       let rendererProcess = model.getOrCreateProcess(1984);
       let mainThread = rendererProcess.getOrCreateThread(2);
@@ -96,13 +96,13 @@ tr.b.unittest.testSuite(function() {
       }));
     });
     let values = new tr.v.HistogramSet();
-    tr.metrics.sh.estimatedInputLatency(values, model);
+    tr.metrics.sh.expectedQueueingTimeMetric(values, model);
     let interactiveEQT = values.getHistogramNamed(
         'interactive:500ms_window:renderer_eqt');
     assert.equal(0, interactiveEQT.numValues);
   });
 
-  test('estimatedInputLatency_multipleInteractive', function() {
+  test('expectedQueueingTime_multipleInteractive', function() {
     let model = tr.c.TestUtils.newModel((model) => {
       let rendererProcess = model.getOrCreateProcess(1984);
       let mainThread = rendererProcess.getOrCreateThread(2);
@@ -129,7 +129,7 @@ tr.b.unittest.testSuite(function() {
       }));
     });
     let values = new tr.v.HistogramSet();
-    tr.metrics.sh.estimatedInputLatency(values, model);
+    tr.metrics.sh.expectedQueueingTimeMetric(values, model);
     let interactiveEQT = values.getHistogramNamed(
         'interactive:500ms_window:renderer_eqt');
     // TODO(ulan): Support multiple interactive time windows when
@@ -137,7 +137,7 @@ tr.b.unittest.testSuite(function() {
     assert.equal(0, interactiveEQT.numValues);
   });
 
-  test('estimatedInputLatency_multipleRenderersAggregates', function() {
+  test('expectedQueueingTime_multipleRenderersAggregates', function() {
     let model = tr.c.TestUtils.newModel(function(model) {
       let rendererProcess = model.getOrCreateProcess(1984);
       let mainThread = rendererProcess.getOrCreateThread(2);
@@ -173,10 +173,66 @@ tr.b.unittest.testSuite(function() {
       }));
     });
     let values = new tr.v.HistogramSet();
-    tr.metrics.sh.estimatedInputLatency(values, model);
+    tr.metrics.sh.expectedQueueingTimeMetric(values, model);
     let eqt = values.getHistogramNamed(
         'interactive:500ms_window:renderer_eqt');
     assert.equal(0.05, eqt.average);
   });
+
+  test('contributionToExpectedQueueingTime', function() {
+    let model = tr.c.TestUtils.newModel((model) => {
+      let rendererProcess = model.getOrCreateProcess(1984);
+      let mainThread = rendererProcess.getOrCreateThread(2);
+      mainThread.name = 'CrRendererMain';
+      addInteractiveTimestamp(rendererProcess, mainThread, 200);
+      mainThread.sliceGroup.pushSlice(tr.c.TestUtils.newSliceEx({
+        cat: 'toplevel',
+        title: 'TaskQueueManager::ProcessTaskFromWorkQueue',
+        start: 0,
+        duration: 100,
+      }));
+      mainThread.sliceGroup.pushSlice(tr.c.TestUtils.newSliceEx({
+        cat: 'v8',
+        title: 'V8.GCFinalizeMC',
+        start: 50,
+        duration: 50,
+      }));
+      mainThread.sliceGroup.pushSlice(tr.c.TestUtils.newSliceEx({
+        cat: 'toplevel',
+        title: 'TaskQueueManager::ProcessTaskFromWorkQueue',
+        start: 3000,
+        duration: 10,
+      }));
+      mainThread.sliceGroup.pushSlice(tr.c.TestUtils.newSliceEx({
+        cat: 'v8',
+        title: 'V8.GCFinalizeMC',
+        start: 3000,
+        duration: 5,
+      }));
+      mainThread.sliceGroup.pushSlice(tr.c.TestUtils.newSliceEx({
+        cat: 'toplevel',
+        title: 'TaskQueueManager::ProcessTaskFromWorkQueue',
+        start: 9000,
+        duration: 10,
+      }));
+      mainThread.sliceGroup.pushSlice(tr.c.TestUtils.newSliceEx({
+        cat: 'v8',
+        title: 'V8.GCFinalizeMC',
+        start: 9000,
+        duration: 5,
+      }));
+      mainThread.sliceGroup.createSubSlices();
+    });
+    let values = new tr.v.HistogramSet();
+    tr.metrics.sh.contributionToExpectedQueueingTime(
+        (event => event.title === 'V8.GCFinalizeMC'), 'v8:gc',
+        values, model);
+    let interactiveEQT = values.getHistogramNamed(
+        'interactive:500ms_window:renderer_eqt:v8:gc');
+    assert.equal(0.025, interactiveEQT.average);
+    let totalEQT = values.getHistogramNamed(
+        'total:500ms_window:renderer_eqt:v8:gc');
+    assert.equal(2.5, totalEQT.average);
+  });
 });
 </script>