diff --git a/toolkit/components/telemetry/Telemetry.cpp b/toolkit/components/telemetry/Telemetry.cpp
index a3d255277f59..93084acb9d68 100644
--- a/toolkit/components/telemetry/Telemetry.cpp
+++ b/toolkit/components/telemetry/Telemetry.cpp
@@ -3969,14 +3969,6 @@ CanRecordExtended()
   return TelemetryImpl::CanRecordExtended();
 }
 
-base::Histogram*
-GetHistogramById(ID id)
-{
-  Histogram *h = nullptr;
-  GetHistogramByEnumId(id, &h);
-  return h;
-}
-
 const char*
 GetHistogramName(Telemetry::ID id)
 {
diff --git a/toolkit/components/telemetry/Telemetry.h b/toolkit/components/telemetry/Telemetry.h
index cfdb445905f0..67b1fc793dba 100644
--- a/toolkit/components/telemetry/Telemetry.h
+++ b/toolkit/components/telemetry/Telemetry.h
@@ -12,10 +12,6 @@
 #include "nsTArray.h"
 #include "nsStringGlue.h"
 
-namespace base {
-  class Histogram;
-} // namespace base
-
 namespace mozilla {
 namespace HangMonitor {
   class HangAnnotations;
@@ -93,18 +89,8 @@ void AccumulateTimeDelta(ID id, TimeStamp start, TimeStamp end = TimeStamp::Now(
  */
 void SetHistogramRecordingEnabled(ID id, bool enabled);
 
-/**
- * Return a raw Histogram for direct manipulation for users who can not use Accumulate().
- */
-base::Histogram* GetHistogramById(ID id);
-
 const char* GetHistogramName(ID id);
 
-/**
- * Return a raw histogram for keyed histograms.
- */
-base::Histogram* GetKeyedHistogramById(ID id, const nsAString&);
-
 /**
  * Those wrappers are needed because the VS versions we use do not support free
  * functions with default template arguments.