http_server: accept full NetAddress in CreateHttpServer.

This patch allows to specify a full NetAddress on which the server is to
be set up.

This is needed to decide between running the server on externally
visible address (like http_handler would like) and localhost (like skydb
would like).

No change in behavior of existing clients in the Mojo repo should occur.
A follow-up patch will switch some of the clients from 0.0.0.0 to
localhost.

BUG=460908
R=qsr@chromium.org

Review URL: https://codereview.chromium.org/953513002

tools/debugger/BUILD.gn

@@ -29,6 +29,7 @@ mojo_native_application("sky_debugger") {
     "//mojo/public/cpp/bindings",
     "//mojo/public/cpp/system",
     "//mojo/public/cpp/utility",
+    "//mojo/services/network/public/interfaces",
     "//mojo/services/window_manager/public/interfaces",
     "//services/http_server/public",
     "//services/http_server/public:util",

tools/debugger/debugger.cc

@@ -14,6 +14,7 @@
 #include "mojo/public/cpp/application/application_delegate.h"
 #include "mojo/public/cpp/application/application_impl.h"
 #include "mojo/public/cpp/bindings/binding.h"
+#include "mojo/services/network/public/interfaces/net_address.mojom.h"
 #include "mojo/services/window_manager/public/interfaces/window_manager.mojom.h"
 #include "services/http_server/public/http_server.mojom.h"
 #include "services/http_server/public/http_server_factory.mojom.h"
@@ -45,8 +46,18 @@ class SkyDebugger : public mojo::ApplicationDelegate,
     base::StringToUint(app->args()[1], &command_port_);
     http_server::HttpServerFactoryPtr http_server_factory;
     app->ConnectToService("mojo:http_server", &http_server_factory);
+
+    mojo::NetAddressPtr local_address(mojo::NetAddress::New());
+    local_address->family = mojo::NET_ADDRESS_FAMILY_IPV4;
+    local_address->ipv4 = mojo::NetAddressIPv4::New();
+    local_address->ipv4->addr.resize(4);
+    local_address->ipv4->addr[0] = 0;
+    local_address->ipv4->addr[1] = 0;
+    local_address->ipv4->addr[2] = 0;
+    local_address->ipv4->addr[3] = 0;
+    local_address->ipv4->port = command_port_;
     http_server_factory->CreateHttpServer(GetProxy(&http_server_).Pass(),
-                                          command_port_);
+                                          local_address.Pass());
 
     http_server::HttpHandlerPtr handler_ptr;
     handler_binding_.Bind(GetProxy(&handler_ptr).Pass());