Do a better job at faking simple challenge signatures.

chromeos/BUILD.gn

Index: chromeos/BUILD.gn
diff --git a/chromeos/BUILD.gn b/chromeos/BUILD.gn
index 139a14071e94eeb8fb011cc5eb6927b42a74ff89..19850e2c3fb3f711a0a0ee056025493f50a630a1 100644
--- a/chromeos/BUILD.gn
+++ b/chromeos/BUILD.gn
@@ -24,6 +24,7 @@ component("chromeos") {
     "//dbus",
   ]
   deps = [
+    ":attestation_proto",
     ":cryptohome_proto",
     ":power_manager_proto",
     "//base",
@@ -61,6 +62,7 @@ static_library("test_support") {
   testonly = true
   configs += [ "//build/config/linux/dbus" ]
   public_deps = [
+    ":attestation_proto",
     ":chromeos",
     ":cryptohome_proto",
     ":power_manager_proto",
@@ -126,6 +128,7 @@ static_library("test_support_without_gmock") {
   testonly = true
   configs += [ "//build/config/linux/dbus" ]
   deps = [
+    ":attestation_proto",
     ":chromeos",
     ":cryptohome_proto",
     ":power_manager_proto",
@@ -149,6 +152,7 @@ test("chromeos_unittests") {
     "//third_party/nss:system_nss_no_ssl_config",
   ]
   deps = [
+    ":attestation_proto",
     ":cryptohome_proto",
     ":power_manager_proto",
     ":test_support",
@@ -203,6 +207,14 @@ proto_library("cryptohome_proto") {
   proto_out_dir = "chromeos/dbus/cryptohome"
 }
 
+proto_library("attestation_proto") {
+  sources = [
+    "dbus/proto/attestation.proto",
+  ]
+
+  proto_out_dir = "chromeos/cryptohome"
+}
+
 proto_library("cryptohome_signkey_proto") {
   sources = [
     "//third_party/cros_system_api/dbus/cryptohome/signed_secret.proto",