[GRC] UKM Support

components/ukm/public/mojo_ukm_recorder.h

Index: components/ukm/public/mojo_ukm_recorder.h
diff --git a/components/ukm/public/mojo_ukm_recorder.h b/components/ukm/public/mojo_ukm_recorder.h
index de959b31f4324dc2da62a8f0d179dd67c328a2fd..2df07803d7b14c30b109c28b1684d757ee5bf471 100644
--- a/components/ukm/public/mojo_ukm_recorder.h
+++ b/components/ukm/public/mojo_ukm_recorder.h
@@ -6,6 +6,7 @@
 #define COMPONENTS_UKM_PUBLIC_MOJO_UKM_RECORDER_H_
 
 #include "components/ukm/public/interfaces/ukm_interface.mojom.h"
+#include "components/ukm/public/ukm_export.h"
 #include "components/ukm/public/ukm_recorder.h"
 
 namespace ukm {
@@ -24,9 +25,9 @@ namespace ukm {
  *      recorder.GetEntryBuilder(coordination_unit_id, "MyEvent");
  *  builder->AddMetric("MyMetric", metric_value);
  */
-class MojoUkmRecorder : public UkmRecorder {
+class UKM_EXPORT MojoUkmRecorder : public UkmRecorder {
  public:
-  MojoUkmRecorder(mojom::UkmRecorderInterfacePtr interface);
+  explicit MojoUkmRecorder(mojom::UkmRecorderInterfacePtr interface);
   ~MojoUkmRecorder() override;
 
  private: