Initial support for built-in DNS resolver/cache.

BUG=None
TEST=None

Review URL: http://codereview.chromium.org/3693001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@64202 0039d316-1c4b-4281-b951-d872f2087c98

7 files changed, 15 insertions, 13 deletions

diff --git a/net/base/host_resolver.h b/net/base/host_resolver.h
index 2fb7067..471ad8a 100644
--- a/net/base/host_resolver.h
+++ b/net/base/host_resolver.h
@@ -20,6 +20,7 @@ namespace net {
 class AddressList;
 class BoundNetLog;
 class HostResolverImpl;
+class HostResolverProc;
 class NetLog;
 
 // This class represents the task of resolving hostnames (or IP address
@@ -230,13 +231,13 @@ class SingleRequestHostResolver {
   DISALLOW_COPY_AND_ASSIGN(SingleRequestHostResolver);
 };
 
-// Creates a HostResolver implementation that queries the underlying system.
-// (Except if a unit-test has changed the global HostResolverProc using
-// ScopedHostResolverProc to intercept requests to the system).
-// |max_concurrent_resolves| is how many resolve requests will be allowed to
-// run in parallel. Pass HostResolver::kDefaultParallelism to choose a
-// default value.
+// Creates a HostResolver implementation using |resolver_proc| as resolver,
+// (which if NULL, will default to getaddrinfo() wrapper) that queries the
+// underlying system, |max_concurrent_resolves| is how many resolve
+// requests will be allowed to run in parallel. Pass
+// HostResolver::kDefaultParallelism to choose a default value.
 HostResolver* CreateSystemHostResolver(size_t max_concurrent_resolves,
+                                       HostResolverProc* resolver_proc,
                                        NetLog* net_log);
 
 }  // namespace net
diff --git a/net/base/host_resolver_impl.cc b/net/base/host_resolver_impl.cc
index 246f50a..13dce85 100644
--- a/net/base/host_resolver_impl.cc
+++ b/net/base/host_resolver_impl.cc
@@ -72,6 +72,7 @@ HostCache* CreateDefaultCache() {
 }  // anonymous namespace
 
 HostResolver* CreateSystemHostResolver(size_t max_concurrent_resolves,
+                                       HostResolverProc* resolver_proc,
                                        NetLog* net_log) {
   // Maximum of 50 concurrent threads.
   // TODO(eroman): Adjust this, do some A/B experiments.
@@ -81,7 +82,7 @@ HostResolver* CreateSystemHostResolver(size_t max_concurrent_resolves,
     max_concurrent_resolves = kDefaultMaxJobs;
 
   HostResolverImpl* resolver =
-      new HostResolverImpl(NULL, CreateDefaultCache(),
+      new HostResolverImpl(resolver_proc, CreateDefaultCache(),
                            max_concurrent_resolves, net_log);
 
   return resolver;
diff --git a/net/proxy/proxy_script_fetcher_impl_unittest.cc b/net/proxy/proxy_script_fetcher_impl_unittest.cc
index f84be57..f9828ee 100644
--- a/net/proxy/proxy_script_fetcher_impl_unittest.cc
+++ b/net/proxy/proxy_script_fetcher_impl_unittest.cc
@@ -36,7 +36,7 @@ class RequestContext : public URLRequestContext {
     net::ProxyConfig no_proxy;
     host_resolver_ =
         net::CreateSystemHostResolver(net::HostResolver::kDefaultParallelism,
-                                      NULL);
+                                      NULL, NULL);
     proxy_service_ = net::ProxyService::CreateFixed(no_proxy);
     ssl_config_service_ = new net::SSLConfigServiceDefaults;
 
diff --git a/net/socket/tcp_client_socket_unittest.cc b/net/socket/tcp_client_socket_unittest.cc
index fdd966c..3d92166 100644
--- a/net/socket/tcp_client_socket_unittest.cc
+++ b/net/socket/tcp_client_socket_unittest.cc
@@ -93,7 +93,7 @@ void TCPClientSocketTest::SetUp() {
   AddressList addr;
   scoped_ptr<HostResolver> resolver(
       CreateSystemHostResolver(HostResolver::kDefaultParallelism,
-                               NULL));
+                               NULL, NULL));
   HostResolver::RequestInfo info(HostPortPair("localhost", listen_port_));
   int rv = resolver->Resolve(info, &addr, NULL, NULL, BoundNetLog());
   CHECK_EQ(rv, OK);
diff --git a/net/test/test_server.cc b/net/test/test_server.cc
index 0b1cd085..6e18e18 100644
--- a/net/test/test_server.cc
+++ b/net/test/test_server.cc
@@ -191,7 +191,7 @@ bool TestServer::GetAddressList(AddressList* address_list) const {
   DCHECK(address_list);
 
   scoped_ptr<HostResolver> resolver(
-      CreateSystemHostResolver(HostResolver::kDefaultParallelism, NULL));
+      CreateSystemHostResolver(HostResolver::kDefaultParallelism, NULL, NULL));
   HostResolver::RequestInfo info(host_port_pair_);
   int rv = resolver->Resolve(info, address_list, NULL, NULL, BoundNetLog());
   if (rv != net::OK) {
diff --git a/net/tools/fetch/fetch_client.cc b/net/tools/fetch/fetch_client.cc
index 42949c8..3bdbcbf 100644
--- a/net/tools/fetch/fetch_client.cc
+++ b/net/tools/fetch/fetch_client.cc
@@ -137,7 +137,7 @@ int main(int argc, char**argv) {
 
   scoped_ptr<net::HostResolver> host_resolver(
       net::CreateSystemHostResolver(net::HostResolver::kDefaultParallelism,
-                                    NULL));
+                                    NULL, NULL));
 
   scoped_refptr<net::ProxyService> proxy_service(
       net::ProxyService::CreateDirect());
diff --git a/net/url_request/url_request_unittest.h b/net/url_request/url_request_unittest.h
index 2a3ae41..abb6ab5 100644
--- a/net/url_request/url_request_unittest.h
+++ b/net/url_request/url_request_unittest.h
@@ -126,7 +126,7 @@ class TestURLRequestContext : public URLRequestContext {
   TestURLRequestContext() {
     host_resolver_ =
         net::CreateSystemHostResolver(net::HostResolver::kDefaultParallelism,
-                                      NULL);
+                                      NULL, NULL);
     proxy_service_ = net::ProxyService::CreateDirect();
     Init();
   }
@@ -134,7 +134,7 @@ class TestURLRequestContext : public URLRequestContext {
   explicit TestURLRequestContext(const std::string& proxy) {
     host_resolver_  =
         net::CreateSystemHostResolver(net::HostResolver::kDefaultParallelism,
-                                      NULL);
+                                      NULL, NULL);
     net::ProxyConfig proxy_config;
     proxy_config.proxy_rules().ParseFromString(proxy);
     proxy_service_ = net::ProxyService::CreateFixed(proxy_config);