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.

layout/base/nsDisplayList.cpp

@@ -7491,9 +7491,6 @@ PaintTelemetry::AutoRecordPaint::~AutoRecordPaint()
 
   double totalMs = (TimeStamp::Now() - mStart).ToMilliseconds();
 
-  // Record the total time.
-  Telemetry::Accumulate(Telemetry::CONTENT_PAINT_TIME, static_cast<uint32_t>(totalMs));
-
   // If the total time was >= 16ms, then it's likely we missed a frame due to
   // painting. In this case we'll gather some detailed metrics below.
   if (totalMs <= 16.0) {
@@ -7504,9 +7501,6 @@ PaintTelemetry::AutoRecordPaint::~AutoRecordPaint()
     MOZ_ASSERT(aDurationMs <= totalMs);
 
     uint32_t amount = static_cast<int32_t>((aDurationMs / totalMs) * 100.0);
-
-    nsDependentCString key(aKey);
-    Telemetry::Accumulate(Telemetry::CONTENT_LARGE_PAINT_PHASE_WEIGHT, key, amount);
   };
 
   double dlMs = sMetrics[Metric::DisplayList];

layout/base/nsDocumentViewer.cpp

@@ -1275,7 +1275,6 @@ nsDocumentViewer::PermitUnloadInternal(bool *aShouldPrompt,
 
       nsAutoSyncOperation sync(mDocument);
       mInPermitUnloadPrompt = true;
-      mozilla::Telemetry::Accumulate(mozilla::Telemetry::ONBEFOREUNLOAD_PROMPT_COUNT, 1);
       rv = prompt->ConfirmEx(title, message, buttonFlags,
                              leaveLabel, stayLabel, nullptr, nullptr,
                              &dummy, &buttonPressed);
@@ -1290,15 +1289,12 @@ nsDocumentViewer::PermitUnloadInternal(bool *aShouldPrompt,
       // XXX: Are there other cases where prompts can abort? Is it ok to
       //      prevent unloading the page in those cases?
       if (NS_FAILED(rv)) {
-        mozilla::Telemetry::Accumulate(mozilla::Telemetry::ONBEFOREUNLOAD_PROMPT_ACTION, 2);
         *aPermitUnload = false;
         return NS_OK;
       }
 
       // Button 0 == leave, button 1 == stay
       *aPermitUnload = (buttonPressed == 0);
-      mozilla::Telemetry::Accumulate(mozilla::Telemetry::ONBEFOREUNLOAD_PROMPT_ACTION,
-        (*aPermitUnload ? 1 : 0));
       // If the user decided to go ahead, make sure not to prompt the user again
       // by toggling the internal prompting bool to false:
       if (*aPermitUnload) {

layout/base/nsLayoutUtils.cpp

@@ -3569,8 +3569,6 @@ nsLayoutUtils::PaintFrame(nsRenderingContext* aRenderingContext, nsIFrame* aFram
   }
 
   builder.LeavePresShell(aFrame, &list);
-  Telemetry::AccumulateTimeDelta(Telemetry::PAINT_BUILD_DISPLAYLIST_TIME,
-                                 startBuildDisplayList);
 
   bool profilerNeedsDisplayList = profiler_feature_active("displaylistdump");
   bool consoleNeedsDisplayList = gfxUtils::DumpDisplayList() || gfxEnv::DumpPaint();
@@ -3651,8 +3649,6 @@ nsLayoutUtils::PaintFrame(nsRenderingContext* aRenderingContext, nsIFrame* aFram
   TimeStamp paintStart = TimeStamp::Now();
   RefPtr<LayerManager> layerManager
     = list.PaintRoot(&builder, aRenderingContext, flags);
-  Telemetry::AccumulateTimeDelta(Telemetry::PAINT_RASTERIZE_TIME,
-                                 paintStart);
 
   if (gfxPrefs::GfxLoggingPaintedPixelCountEnabled()) {
     TimeStamp now = TimeStamp::Now();

layout/base/nsPresShell.cpp

@@ -1114,17 +1114,6 @@ PresShell::Destroy()
   if (mPresContext) {
     const bool mayFlushUserFontSet = false;
     gfxUserFontSet* fs = mPresContext->GetUserFontSet(mayFlushUserFontSet);
-    if (fs) {
-      uint32_t fontCount;
-      uint64_t fontSize;
-      fs->GetLoadStatistics(fontCount, fontSize);
-      Telemetry::Accumulate(Telemetry::WEBFONT_PER_PAGE, fontCount);
-      Telemetry::Accumulate(Telemetry::WEBFONT_SIZE_PER_PAGE,
-                            uint32_t(fontSize/1024));
-    } else {
-      Telemetry::Accumulate(Telemetry::WEBFONT_PER_PAGE, 0);
-      Telemetry::Accumulate(Telemetry::WEBFONT_SIZE_PER_PAGE, 0);
-    }
   }
 
 #ifdef MOZ_REFLOW_PERF
@@ -2276,8 +2265,6 @@ PresShell::ScrollPage(bool aForward)
   nsIScrollableFrame* scrollFrame =
     GetFrameToScrollAsScrollable(nsIPresShell::eVertical);
   if (scrollFrame) {
-    mozilla::Telemetry::Accumulate(mozilla::Telemetry::SCROLL_INPUT_METHODS,
-        (uint32_t) ScrollInputMethod::MainThreadScrollPage);
     scrollFrame->ScrollBy(nsIntPoint(0, aForward ? 1 : -1),
                           nsIScrollableFrame::PAGES,
                           nsIScrollableFrame::SMOOTH,
@@ -2294,9 +2281,6 @@ PresShell::ScrollLine(bool aForward)
   nsIScrollableFrame* scrollFrame =
     GetFrameToScrollAsScrollable(nsIPresShell::eVertical);
   if (scrollFrame) {
-    mozilla::Telemetry::Accumulate(mozilla::Telemetry::SCROLL_INPUT_METHODS,
-        (uint32_t) ScrollInputMethod::MainThreadScrollLine);
-
     int32_t lineCount = Preferences::GetInt("toolkit.scrollbox.verticalScrollDistance",
                                             NS_DEFAULT_VERTICAL_SCROLL_DISTANCE);
     scrollFrame->ScrollBy(nsIntPoint(0, aForward ? lineCount : -lineCount),
@@ -2315,8 +2299,6 @@ PresShell::ScrollCharacter(bool aRight)
   nsIScrollableFrame* scrollFrame =
     GetFrameToScrollAsScrollable(nsIPresShell::eHorizontal);
   if (scrollFrame) {
-    mozilla::Telemetry::Accumulate(mozilla::Telemetry::SCROLL_INPUT_METHODS,
-        (uint32_t) ScrollInputMethod::MainThreadScrollCharacter);
     int32_t h = Preferences::GetInt("toolkit.scrollbox.horizontalScrollDistance",
                                     NS_DEFAULT_HORIZONTAL_SCROLL_DISTANCE);
     scrollFrame->ScrollBy(nsIntPoint(aRight ? h : -h, 0),
@@ -2335,8 +2317,6 @@ PresShell::CompleteScroll(bool aForward)
   nsIScrollableFrame* scrollFrame =
     GetFrameToScrollAsScrollable(nsIPresShell::eVertical);
   if (scrollFrame) {
-    mozilla::Telemetry::Accumulate(mozilla::Telemetry::SCROLL_INPUT_METHODS,
-        (uint32_t) ScrollInputMethod::MainThreadCompleteScroll);
     scrollFrame->ScrollBy(nsIntPoint(0, aForward ? 1 : -1),
                           nsIScrollableFrame::WHOLE,
                           nsIScrollableFrame::SMOOTH,
@@ -8231,16 +8211,6 @@ PresShell::HandleEventInternal(WidgetEvent* aEvent,
     }
   }
 
-  if (Telemetry::CanRecordBase() &&
-      !aEvent->mTimeStamp.IsNull() &&
-      aEvent->AsInputEvent()) {
-    double millis = (TimeStamp::Now() - aEvent->mTimeStamp).ToMilliseconds();
-    Telemetry::Accumulate(Telemetry::INPUT_EVENT_RESPONSE_MS, millis);
-    if (mDocument && mDocument->GetReadyStateEnum() != nsIDocument::READYSTATE_COMPLETE) {
-      Telemetry::Accumulate(Telemetry::LOAD_INPUT_EVENT_RESPONSE_MS, millis);
-    }
-  }
-
   return rv;
 }
 
@@ -9522,16 +9492,6 @@ PresShell::ProcessReflowCommands(bool aInterruptible)
     UnsuppressAndInvalidate();
   }
 
-  if (mDocument->GetRootElement()) {
-    TimeDuration elapsed = TimeStamp::Now() - timerStart;
-    int32_t intElapsed = int32_t(elapsed.ToMilliseconds());
-
-    if (intElapsed > NS_LONG_REFLOW_TIME_MS) {
-      Telemetry::Accumulate(Telemetry::LONG_REFLOW_INTERRUPTIBLE,
-                            aInterruptible ? 1 : 0);
-    }
-  }
-
   return !interrupted;
 }
 

layout/base/nsRefreshDriver.cpp

@@ -526,10 +526,6 @@ private:
       if (XRE_IsParentProcess()) {
         TimeDuration vsyncLatency = TimeStamp::Now() - aVsyncTimestamp;
         uint32_t sample = (uint32_t)vsyncLatency.ToMilliseconds();
-        Telemetry::Accumulate(Telemetry::FX_REFRESH_DRIVER_CHROME_FRAME_DELAY_MS,
-                              sample);
-        Telemetry::Accumulate(Telemetry::FX_REFRESH_DRIVER_SYNC_SCROLL_FRAME_DELAY_MS,
-                              sample);
         RecordJank(sample);
       } else if (mVsyncRate != TimeDuration::Forever()) {
         TimeDuration contentDelay = (TimeStamp::Now() - mLastChildTick) - mVsyncRate;
@@ -539,10 +535,6 @@ private:
           contentDelay = TimeDuration::FromMilliseconds(0);
         }
         uint32_t sample = (uint32_t)contentDelay.ToMilliseconds();
-        Telemetry::Accumulate(Telemetry::FX_REFRESH_DRIVER_CONTENT_FRAME_DELAY_MS,
-                              sample);
-        Telemetry::Accumulate(Telemetry::FX_REFRESH_DRIVER_SYNC_SCROLL_FRAME_DELAY_MS,
-                              sample);
         RecordJank(sample);
       } else {
         // Request the vsync rate from the parent process. Might be a few vsyncs
@@ -2027,10 +2019,6 @@ nsRefreshDriver::Tick(int64_t aNowEpoch, TimeStamp aNowTime)
     notifyGC = true;
   }
 
-#ifndef ANDROID  /* bug 1142079 */
-  mozilla::Telemetry::AccumulateTimeDelta(mozilla::Telemetry::REFRESH_DRIVER_TICK, mTickStart);
-#endif
-
   nsTObserverArray<nsAPostRefreshObserver*>::ForwardIterator iter(mPostRefreshObservers);
   while (iter.HasMore()) {
     nsAPostRefreshObserver* observer = iter.GetNext();