Move CUP to new component client_update_protocol

components/update_client/BUILD.gn

Index: components/update_client/BUILD.gn
diff --git a/components/update_client/BUILD.gn b/components/update_client/BUILD.gn
index 9a253d2fbdc2e35e4f9df98cdd570dc0603fcbba..e6c687946445534dbe71f9741ae289b0fbc108e1 100644
--- a/components/update_client/BUILD.gn
+++ b/components/update_client/BUILD.gn
@@ -14,8 +14,6 @@ source_set("update_client") {
     "action_wait.h",
     "background_downloader_win.cc",
     "background_downloader_win.h",
-    "client_update_protocol_ecdsa.cc",
-    "client_update_protocol_ecdsa.h",
     "component_patcher.cc",
     "component_patcher.h",
     "component_patcher_operation.cc",
@@ -54,6 +52,7 @@ source_set("update_client") {
 
   deps = [
     "//base",
+    "//components/client_update_protocol",
     "//components/crx_file",
     "//courgette:courgette_lib",
     "//crypto",
@@ -90,7 +89,6 @@ source_set("test_support") {
 source_set("unit_tests") {
   testonly = true
   sources = [
-    "client_update_protocol_ecdsa_unittest.cc",
     "component_patcher_unittest.cc",
     "crx_downloader_unittest.cc",
     "ping_manager_unittest.cc",