Create MetricsPrivateDelegate for metricsPrivate behavior

chrome/test/data/extensions/api_test/metrics/test.js

Index: chrome/test/data/extensions/api_test/metrics/test.js
diff --git a/chrome/test/data/extensions/api_test/metrics/test.js b/chrome/test/data/extensions/api_test/metrics/test.js
index ab801e220287d1a0bd5ad208ffb412e1ccf2e8fb..29527e34e9cc7e3ea0318ac4b7f87ca46c1e11dc 100644
--- a/chrome/test/data/extensions/api_test/metrics/test.js
+++ b/chrome/test/data/extensions/api_test/metrics/test.js
@@ -9,6 +9,13 @@
 // with the checks done in IN_PROC_BROWSER_TEST_F(ExtensionApiTest, Metrics).
 // See metrics_apitest.cc.
 chrome.test.runTests([
+  function getIsCrashReportingEnabled() {
+    chrome.metricsPrivate.getIsCrashReportingEnabled(function(enabled) {
+      chrome.test.assertEq('boolean', typeof enabled);

[Devlin, 2016/10/01 01:25:14]

It'd be kind of nice to verify the result is correct, but I suppose that might
be out of scope for this CL.  But if you wanted to do it anyway... ;)

+      chrome.test.succeed();
+    });
+  },
+
   function recordUserAction() {
     // Log a metric once.
     chrome.metricsPrivate.recordUserAction('test.ua.1');