Introduce a delegate to avoid hardcoding "chrome-extension" in net/.

net/url_request/url_request_throttler_unittest.cc

Index: net/url_request/url_request_throttler_unittest.cc
diff --git a/net/url_request/url_request_throttler_unittest.cc b/net/url_request/url_request_throttler_unittest.cc
index 0d018cd78b8e030a1406ce81ebc75b72abb2865c..2480f5eb555be97c2a2b1eeaa75d8e87fd811283 100644
--- a/net/url_request/url_request_throttler_unittest.cc
+++ b/net/url_request/url_request_throttler_unittest.cc
@@ -234,10 +234,10 @@ std::ostream& operator<<(std::ostream& out, const base::TimeTicks& time) {
 TEST_F(URLRequestThrottlerEntryTest, InterfaceDuringExponentialBackoff) {
   entry_->set_exponential_backoff_release_time(
       entry_->fake_time_now_ + TimeDelta::FromMilliseconds(1));
-  EXPECT_TRUE(entry_->ShouldRejectRequest(0));
+  EXPECT_TRUE(entry_->ShouldRejectRequest(NULL, 0));
 
   // Also end-to-end test the load flags exceptions.
-  EXPECT_FALSE(entry_->ShouldRejectRequest(LOAD_MAYBE_USER_GESTURE));
+  EXPECT_FALSE(entry_->ShouldRejectRequest(NULL, LOAD_MAYBE_USER_GESTURE));
 
   CalculateHistogramDeltas();
   ASSERT_EQ(1, samples_["Throttling.RequestThrottled"].counts(0));
@@ -246,10 +246,10 @@ TEST_F(URLRequestThrottlerEntryTest, InterfaceDuringExponentialBackoff) {
 
 TEST_F(URLRequestThrottlerEntryTest, InterfaceNotDuringExponentialBackoff) {
   entry_->set_exponential_backoff_release_time(entry_->fake_time_now_);
-  EXPECT_FALSE(entry_->ShouldRejectRequest(0));
+  EXPECT_FALSE(entry_->ShouldRejectRequest(NULL, 0));
   entry_->set_exponential_backoff_release_time(
       entry_->fake_time_now_ - TimeDelta::FromMilliseconds(1));
-  EXPECT_FALSE(entry_->ShouldRejectRequest(0));
+  EXPECT_FALSE(entry_->ShouldRejectRequest(NULL, 0));
 
   CalculateHistogramDeltas();
   ASSERT_EQ(2, samples_["Throttling.RequestThrottled"].counts(0));
@@ -278,10 +278,6 @@ TEST_F(URLRequestThrottlerEntryTest, InterfaceUpdateSuccessThenFailure) {
   EXPECT_GT(entry_->GetExponentialBackoffReleaseTime(), entry_->fake_time_now_)
       << "This scenario should add delay";
   entry_->UpdateWithResponse("", &success_response);
-
-  CalculateHistogramDeltas();
-  ASSERT_EQ(1, samples_["Throttling.FailureCountAtSuccess"].counts(1));
-  ASSERT_EQ(1, samples_["Throttling.PerceivedDowntime"].TotalCount());
 }
 
 TEST_F(URLRequestThrottlerEntryTest, IsEntryReallyOutdated) {
@@ -438,13 +434,13 @@ TEST(URLRequestThrottlerManager, IsHostBeingRegistered) {
 void ExpectEntryAllowsAllOnErrorIfOptedOut(
     net::URLRequestThrottlerEntryInterface* entry,
     bool opted_out) {
-  EXPECT_FALSE(entry->ShouldRejectRequest(0));
+  EXPECT_FALSE(entry->ShouldRejectRequest(NULL, 0));
   MockURLRequestThrottlerHeaderAdapter failure_adapter(503);
   for (int i = 0; i < 10; ++i) {
     // Host doesn't really matter in this scenario so we skip it.
     entry->UpdateWithResponse("", &failure_adapter);
   }
-  EXPECT_NE(opted_out, entry->ShouldRejectRequest(0));
+  EXPECT_NE(opted_out, entry->ShouldRejectRequest(NULL, 0));
 
   if (opted_out) {
     // We're not mocking out GetTimeNow() in this scenario
@@ -504,7 +500,7 @@ TEST(URLRequestThrottlerManager, ClearOnNetworkChange) {
       // Host doesn't really matter in this scenario so we skip it.
       entry_before->UpdateWithResponse("", &failure_adapter);
     }
-    EXPECT_TRUE(entry_before->ShouldRejectRequest(0));
+    EXPECT_TRUE(entry_before->ShouldRejectRequest(NULL, 0));
 
     switch (i) {
       case 0:
@@ -524,7 +520,7 @@ TEST(URLRequestThrottlerManager, ClearOnNetworkChange) {
 
     scoped_refptr<net::URLRequestThrottlerEntryInterface> entry_after =
         manager.RegisterRequestUrl(GURL("http://www.example.com/"));
-    EXPECT_FALSE(entry_after->ShouldRejectRequest(0));
+    EXPECT_FALSE(entry_after->ShouldRejectRequest(NULL, 0));
   }
 }