HostResolver supports optional CNAME lookups.

net/base/host_resolver_impl_unittest.cc

Index: net/base/host_resolver_impl_unittest.cc
diff --git a/net/base/host_resolver_impl_unittest.cc b/net/base/host_resolver_impl_unittest.cc
index bd19f0b87e046db4c04ed4976ac82055729af743..a17fb6a8b2b90c520ab158b1925f15977ea65d58 100644
--- a/net/base/host_resolver_impl_unittest.cc
+++ b/net/base/host_resolver_impl_unittest.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -90,13 +90,15 @@ class CapturingHostResolverProc : public HostResolverProc {
 
   virtual int Resolve(const std::string& hostname,
                       AddressFamily address_family,
+                      HostResolverFlags host_resolver_flags,
                       AddressList* addrlist) {
     event_.Wait();
     {
       AutoLock l(lock_);
       capture_list_.push_back(CaptureEntry(hostname, address_family));
     }
-    return ResolveUsingPrevious(hostname, address_family, addrlist);
+    return ResolveUsingPrevious(hostname, address_family,
+                                host_resolver_flags, addrlist);
   }
 
   CaptureList GetCaptureList() const {
@@ -134,6 +136,7 @@ class EchoingHostResolverProc : public HostResolverProc {
 
   virtual int Resolve(const std::string& hostname,
                       AddressFamily address_family,
+                      HostResolverFlags host_resolver_flags,
                       AddressList* addrlist) {
     // Encode the request's hostname and address_family in the output address.
     std::string ip_literal = StringPrintf("192.%d.%d.%d",
@@ -143,6 +146,7 @@ class EchoingHostResolverProc : public HostResolverProc {
 
     return SystemHostResolverProc(ip_literal,
                                   ADDRESS_FAMILY_UNSPECIFIED,
+                                  host_resolver_flags,
                                   addrlist);
   }
 };
@@ -1491,6 +1495,8 @@ TEST_F(HostResolverImplTest, SetDefaultAddressFamily_Synchronous) {
   EXPECT_EQ("192.1.98.1", NetAddressToString(addrlist[3].head()));
 }
 
+// TODO(cbentzel): Test a mix of requests with different HostResolverFlags.
+
 }  // namespace
 
 }  // namespace net