Refactor UKM interface for mojo-ification

components/ukm/BUILD.gn

Index: components/ukm/BUILD.gn
diff --git a/components/ukm/BUILD.gn b/components/ukm/BUILD.gn
index 57dc72e69e91a9bdd1a8397bb6edf819ba4705ee..18f5e630dec2164e74a19edd66cf3bca13bb97ce 100644
--- a/components/ukm/BUILD.gn
+++ b/components/ukm/BUILD.gn
@@ -11,12 +11,10 @@ static_library("ukm") {
   sources = [
     "persisted_logs_metrics_impl.cc",
     "persisted_logs_metrics_impl.h",
-    "ukm_entry.cc",
-    "ukm_entry.h",
-    "ukm_entry_builder.cc",
-    "ukm_entry_builder.h",
     "ukm_pref_names.cc",
     "ukm_pref_names.h",
+    "ukm_recorder_impl.cc",
+    "ukm_recorder_impl.h",
     "ukm_reporting_service.cc",
     "ukm_reporting_service.h",
     "ukm_rotation_scheduler.cc",
@@ -27,6 +25,11 @@ static_library("ukm") {
     "ukm_source.h",
   ]
 
+  public_deps = [
+    "//components/metrics/proto",
+    "//components/ukm/public",
+  ]
+
   deps = [
     "//base",
     "//components/data_use_measurement/core",
@@ -56,12 +59,13 @@ static_library("observers") {
 static_library("test_support") {
   testonly = true
   sources = [
-    "test_ukm_service.cc",
-    "test_ukm_service.h",
+    "test_ukm_recorder.cc",
+    "test_ukm_recorder.h",
   ]
 
   public_deps = [
     ":ukm",
+    "//components/metrics/proto",
   ]
   deps = [
     "//base",