Remove all C++ Telemetry Accumulation calls.

This creates a number of stubs and leaves some surrounding code that may be irrelevant (eg. recorded time stamps, status variables).
Stub resolution/removal should be a follow-up to this.

gfx/layers/apz/src/AsyncPanZoomController.cpp

@@ -904,9 +904,6 @@ nsEventStatus AsyncPanZoomController::HandleDragEvent(const MouseInput& aEvent,
     return nsEventStatus_eConsumeNoDefault;
   }
 
-  mozilla::Telemetry::Accumulate(mozilla::Telemetry::SCROLL_INPUT_METHODS,
-      (uint32_t) ScrollInputMethod::ApzScrollbarDrag);
-
   ReentrantMonitorAutoEnter lock(mMonitor);
   CSSPoint scrollFramePoint = aEvent.mLocalOrigin / GetFrameMetrics().GetZoom();
   // The scrollbar can be transformed with the frame but the pres shell
@@ -1731,10 +1728,6 @@ nsEventStatus AsyncPanZoomController::OnScrollWheel(const ScrollWheelInput& aEve
     return nsEventStatus_eIgnore;
   }
 
-  mozilla::Telemetry::Accumulate(mozilla::Telemetry::SCROLL_INPUT_METHODS,
-      (uint32_t) ScrollInputMethodForWheelDeltaType(aEvent.mDeltaType));
-
-
   switch (aEvent.mScrollMode) {
     case ScrollWheelInput::SCROLLMODE_INSTANT: {
 
@@ -1934,9 +1927,6 @@ nsEventStatus AsyncPanZoomController::OnPan(const PanGestureInput& aEvent, bool
 
   HandlePanningUpdate(physicalPanDisplacement);
 
-  mozilla::Telemetry::Accumulate(mozilla::Telemetry::SCROLL_INPUT_METHODS,
-      (uint32_t) ScrollInputMethod::ApzPanGesture);
-
   ScreenPoint panDistance(fabs(physicalPanDisplacement.x), fabs(physicalPanDisplacement.y));
   MOZ_ASSERT(GetCurrentPanGestureBlock());
   OverscrollHandoffState handoffState(
@@ -2600,8 +2590,6 @@ void AsyncPanZoomController::TrackTouch(const MultiTouchInput& aEvent) {
   UpdateWithTouchAtDevicePoint(aEvent);
 
   if (prevTouchPoint != touchPoint) {
-    mozilla::Telemetry::Accumulate(mozilla::Telemetry::SCROLL_INPUT_METHODS,
-        (uint32_t) ScrollInputMethod::ApzTouch);
     MOZ_ASSERT(GetCurrentTouchBlock());
     OverscrollHandoffState handoffState(
         *GetCurrentTouchBlock()->GetOverscrollHandoffChain(),
@@ -3260,14 +3248,7 @@ AsyncPanZoomController::UpdateCheckerboardEvent(const MutexAutoLock& aProofOfLoc
                                                 uint32_t aMagnitude)
 {
   if (mCheckerboardEvent && mCheckerboardEvent->RecordFrameInfo(aMagnitude)) {
-    // This checkerboard event is done. Report some metrics to telemetry.
-    mozilla::Telemetry::Accumulate(mozilla::Telemetry::CHECKERBOARD_SEVERITY,
-      mCheckerboardEvent->GetSeverity());
-    mozilla::Telemetry::Accumulate(mozilla::Telemetry::CHECKERBOARD_PEAK,
-      mCheckerboardEvent->GetPeak());
-    mozilla::Telemetry::Accumulate(mozilla::Telemetry::CHECKERBOARD_DURATION,
-      (uint32_t)mCheckerboardEvent->GetDuration().ToMilliseconds());
-
+    // This checkerboard event is done.
     mPotentialCheckerboardTracker.CheckerboardDone();
 
     if (gfxPrefs::APZRecordCheckerboarding()) {

gfx/layers/apz/src/InputBlockState.cpp

@@ -10,7 +10,6 @@
 #include "gfxPrefs.h"                       // for gfxPrefs
 #include "mozilla/MouseEvents.h"
 #include "mozilla/SizePrintfMacros.h"       // for PRIuSIZE
-#include "mozilla/Telemetry.h"              // for Telemetry
 #include "mozilla/layers/APZCTreeManager.h" // for AllowedTouchBehavior
 #include "OverscrollHandoffState.h"
 #include "QueuedInput.h"
@@ -246,8 +245,6 @@ CancelableBlockState::RecordContentResponseTime()
     // Not done yet, we'll get called again
     return;
   }
-  mozilla::Telemetry::Accumulate(mozilla::Telemetry::CONTENT_RESPONSE_DURATION,
-    (uint32_t)(TimeStamp::Now() - mContentResponseTimer).ToMilliseconds());
   mContentResponseTimer = TimeStamp();
 }
 

gfx/layers/apz/src/PotentialCheckerboardDurationTracker.cpp

@@ -33,9 +33,7 @@ PotentialCheckerboardDurationTracker::CheckerboardDone()
   MOZ_ASSERT(Tracking());
   mInCheckerboard = false;
   if (!Tracking()) {
-    mozilla::Telemetry::AccumulateTimeDelta(
-        mozilla::Telemetry::CHECKERBOARD_POTENTIAL_DURATION,
-        mCurrentPeriodStart);
+    /* Telemetry STUB */
   }
 }
 
@@ -63,9 +61,7 @@ PotentialCheckerboardDurationTracker::InTransform(bool aInTransform)
     // would have taken the other !Tracking branch above. If it's false now,
     // it means we just stopped tracking, so we are ending a potential
     // checkerboard period.
-    mozilla::Telemetry::AccumulateTimeDelta(
-        mozilla::Telemetry::CHECKERBOARD_POTENTIAL_DURATION,
-        mCurrentPeriodStart);
+    /* Telemetry STUB */
   }
 }