[GRC] UKM Support

components/ukm/public/ukm_recorder.h

Index: components/ukm/public/ukm_recorder.h
diff --git a/components/ukm/public/ukm_recorder.h b/components/ukm/public/ukm_recorder.h
index a2ca91f0d0022847a512549549c4d6bb8ad9a2ca..857b4722337b841d7064f820ecbcfb89390820c5 100644
--- a/components/ukm/public/ukm_recorder.h
+++ b/components/ukm/public/ukm_recorder.h
@@ -7,6 +7,8 @@
 
 #include <stddef.h>
 
+#include <memory>
+
 #include "base/callback.h"
 #include "base/feature_list.h"
 #include "base/macros.h"
@@ -30,6 +32,10 @@ class RenderFrameImpl;
 class RenderWidgetHostLatencyTracker;
 }
 
+namespace resource_coordinator {
+class CoordinationUnitManager;
+}
+
 namespace translate {
 class TranslateRankerImpl;
 }
@@ -80,6 +86,7 @@ class UKM_EXPORT UkmRecorder {
   friend content::MediaInternals;
   friend content::RenderFrameImpl;
   friend content::RenderWidgetHostLatencyTracker;
+  friend resource_coordinator::CoordinationUnitManager;
   FRIEND_TEST_ALL_PREFIXES(UkmServiceTest, AddEntryWithEmptyMetrics);
   FRIEND_TEST_ALL_PREFIXES(UkmServiceTest, EntryBuilderAndSerialization);
   FRIEND_TEST_ALL_PREFIXES(UkmServiceTest,