Implement THROTTLED priority semantics.

chrome/browser/ssl/chrome_expect_ct_reporter_unittest.cc

Index: chrome/browser/ssl/chrome_expect_ct_reporter_unittest.cc
diff --git a/chrome/browser/ssl/chrome_expect_ct_reporter_unittest.cc b/chrome/browser/ssl/chrome_expect_ct_reporter_unittest.cc
index 8a0cf822f48f43ec2d4fee785896a93c2e046814..5b69a376efc1094f22b61cbc510285438fb5ce0d 100644
--- a/chrome/browser/ssl/chrome_expect_ct_reporter_unittest.cc
+++ b/chrome/browser/ssl/chrome_expect_ct_reporter_unittest.cc
@@ -9,6 +9,7 @@
 #include "base/base64.h"
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
+#include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/test/histogram_tester.h"
 #include "base/test/scoped_feature_list.h"
@@ -338,6 +339,7 @@ class ChromeExpectCTReporterWaitTest : public ::testing::Test {
 
 // Test that no report is sent when the feature is not enabled.
 TEST(ChromeExpectCTReporterTest, FeatureDisabled) {
+  base::MessageLoop message_loop;
   base::HistogramTester histograms;
   histograms.ExpectTotalCount(kSendHistogramName, 0);
 
@@ -366,6 +368,7 @@ TEST(ChromeExpectCTReporterTest, FeatureDisabled) {
 
 // Test that no report is sent if the report URI is empty.
 TEST(ChromeExpectCTReporterTest, EmptyReportURI) {
+  base::MessageLoop message_loop;
   base::HistogramTester histograms;
   histograms.ExpectTotalCount(kSendHistogramName, 0);
 
@@ -419,6 +422,7 @@ TEST_F(ChromeExpectCTReporterWaitTest, SendReportFailure) {
 
 // Test that a sent report has the right format.
 TEST(ChromeExpectCTReporterTest, SendReport) {
+  base::MessageLoop message_loop;
   base::HistogramTester histograms;
   histograms.ExpectTotalCount(kFailureHistogramName, 0);
   histograms.ExpectTotalCount(kSendHistogramName, 0);