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.

17 files changed, 8 insertions, 186 deletions

diff --git a/gfx/gl/GLLibraryEGL.cpp b/gfx/gl/GLLibraryEGL.cpp
index 3d8da3085..75f40f13f 100644
--- a/gfx/gl/GLLibraryEGL.cpp
+++ b/gfx/gl/GLLibraryEGL.cpp
@@ -9,7 +9,6 @@
 #include "gfxUtils.h"
 #include "mozilla/Preferences.h"
 #include "mozilla/Assertions.h"
-#include "mozilla/Telemetry.h"
 #include "mozilla/Tokenizer.h"
 #include "mozilla/ScopeExit.h"
 #include "mozilla/Unused.h"
@@ -472,20 +471,6 @@ GLLibraryEGL::EnsureInitialized(bool forceAccel, nsACString* const out_failureId
             chosenDisplay = GetAndInitDisplayForAccelANGLE(*this, out_failureId);
         }
 
-        // Report the acceleration status to telemetry
-        if (!chosenDisplay) {
-            if (accelAngleFailureId.IsEmpty()) {
-                Telemetry::Accumulate(Telemetry::CANVAS_WEBGL_ACCL_FAILURE_ID,
-                                      NS_LITERAL_CSTRING("FEATURE_FAILURE_ACCL_ANGLE_UNKNOWN"));
-            } else {
-                Telemetry::Accumulate(Telemetry::CANVAS_WEBGL_ACCL_FAILURE_ID,
-                                      accelAngleFailureId);
-            }
-        } else {
-            Telemetry::Accumulate(Telemetry::CANVAS_WEBGL_ACCL_FAILURE_ID,
-                                  NS_LITERAL_CSTRING("SUCCESS"));
-        }
-
         // Fallback to a WARP display if ANGLE fails, or if WARP is forced
         if (!chosenDisplay && shouldTryWARP) {
             chosenDisplay = GetAndInitWARPDisplay(*this, EGL_DEFAULT_DISPLAY);
diff --git a/gfx/ipc/GPUChild.cpp b/gfx/ipc/GPUChild.cpp
index a075716e3..bfe2d56f7 100644
--- a/gfx/ipc/GPUChild.cpp
+++ b/gfx/ipc/GPUChild.cpp
@@ -8,7 +8,6 @@
 #include "gfxPrefs.h"
 #include "GPUProcessHost.h"
 #include "GPUProcessManager.h"
-#include "mozilla/Telemetry.h"
 #include "mozilla/dom/CheckerboardReportService.h"
 #include "mozilla/gfx/gfxVars.h"
 #if defined(XP_WIN)
@@ -80,7 +79,6 @@ GPUChild::EnsureGPUReady()
   SendGetDeviceStatus(&data);
 
   gfxPlatform::GetPlatform()->ImportGPUDeviceData(data);
-  Telemetry::AccumulateTimeDelta(Telemetry::GPU_PROCESS_LAUNCH_TIME_MS, mHost->GetLaunchTime());
   mGPUReady = true;
 }
 
@@ -93,7 +91,6 @@ GPUChild::RecvInitComplete(const GPUDeviceData& aData)
   }
 
   gfxPlatform::GetPlatform()->ImportGPUDeviceData(aData);
-  Telemetry::AccumulateTimeDelta(Telemetry::GPU_PROCESS_LAUNCH_TIME_MS, mHost->GetLaunchTime());
   mGPUReady = true;
   return true;
 }
@@ -131,14 +128,14 @@ GPUChild::RecvNotifyUiObservers(const nsCString& aTopic)
 bool
 GPUChild::RecvAccumulateChildHistogram(InfallibleTArray<Accumulation>&& aAccumulations)
 {
-  Telemetry::AccumulateChild(GeckoProcessType_GPU, aAccumulations);
+  /* Telemetry STUB */
   return true;
 }
 
 bool
 GPUChild::RecvAccumulateChildKeyedHistogram(InfallibleTArray<KeyedAccumulation>&& aAccumulations)
 {
-  Telemetry::AccumulateChildKeyed(GeckoProcessType_GPU, aAccumulations);
+  /* Telemetry STUB */
   return true;
 }
 
@@ -152,11 +149,6 @@ GPUChild::RecvNotifyDeviceReset()
 void
 GPUChild::ActorDestroy(ActorDestroyReason aWhy)
 {
-  if (aWhy == AbnormalShutdown) {
-    Telemetry::Accumulate(Telemetry::SUBPROCESS_ABNORMAL_ABORT,
-        nsDependentCString(XRE_ChildProcessTypeToString(GeckoProcessType_GPU), 1));
-  }
-
   gfxVars::RemoveReceiver(this);
   mHost->OnChannelClosed();
 }
diff --git a/gfx/layers/Layers.cpp b/gfx/layers/Layers.cpp
index ff5ab9b50..482d809a1 100644
--- a/gfx/layers/Layers.cpp
+++ b/gfx/layers/Layers.cpp
@@ -22,7 +22,6 @@
 #include "gfxUtils.h"                   // for gfxUtils, etc
 #include "gfx2DGlue.h"
 #include "mozilla/DebugOnly.h"          // for DebugOnly
-#include "mozilla/Telemetry.h"          // for Accumulate
 #include "mozilla/ToString.h"
 #include "mozilla/dom/Animation.h"      // for ComputedTimingFunction
 #include "mozilla/gfx/2D.h"             // for DrawTarget
@@ -1621,8 +1620,6 @@ void
 LayerManager::PostPresent()
 {
   if (!mTabSwitchStart.IsNull()) {
-    Telemetry::Accumulate(Telemetry::FX_TAB_SWITCH_TOTAL_MS,
-                          uint32_t((TimeStamp::Now() - mTabSwitchStart).ToMilliseconds()));
     mTabSwitchStart = TimeStamp();
   }
 }
diff --git a/gfx/layers/apz/src/AsyncPanZoomController.cpp b/gfx/layers/apz/src/AsyncPanZoomController.cpp
index 102f282f3..e7574eeb7 100644
--- a/gfx/layers/apz/src/AsyncPanZoomController.cpp
+++ b/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()) {
diff --git a/gfx/layers/apz/src/InputBlockState.cpp b/gfx/layers/apz/src/InputBlockState.cpp
index f1310c031..85b4e13ff 100644
--- a/gfx/layers/apz/src/InputBlockState.cpp
+++ b/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();
 }
 
diff --git a/gfx/layers/apz/src/PotentialCheckerboardDurationTracker.cpp b/gfx/layers/apz/src/PotentialCheckerboardDurationTracker.cpp
index c83b9f45c..e469421ad 100644
--- a/gfx/layers/apz/src/PotentialCheckerboardDurationTracker.cpp
+++ b/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 */
   }
 }
 
diff --git a/gfx/layers/ipc/CompositorBridgeParent.cpp b/gfx/layers/ipc/CompositorBridgeParent.cpp
index bf510cd46..e31c6ceb6 100644
--- a/gfx/layers/ipc/CompositorBridgeParent.cpp
+++ b/gfx/layers/ipc/CompositorBridgeParent.cpp
@@ -484,8 +484,6 @@ CompositorVsyncScheduler::Composite(TimeStamp aVsyncTimestamp)
     mVsyncNotificationsSkipped = 0;
 
     TimeDuration compositeFrameTotal = TimeStamp::Now() - aVsyncTimestamp;
-    mozilla::Telemetry::Accumulate(mozilla::Telemetry::COMPOSITE_FRAME_ROUNDTRIP_TIME,
-                                   compositeFrameTotal.ToMilliseconds());
   } else if (mVsyncNotificationsSkipped++ > gfxPrefs::CompositorUnobserveCount()) {
     UnobserveVsync();
   }
@@ -1305,7 +1303,6 @@ CompositorBridgeParent::CompositeToTarget(DrawTarget* aTarget, const gfx::IntRec
   }
   mCompositor->SetCompositionTime(TimeStamp());
 
-  mozilla::Telemetry::AccumulateTimeDelta(mozilla::Telemetry::COMPOSITE_TIME, start);
   profiler_tracing("Paint", "Composite", TRACING_INTERVAL_END);
 }
 
@@ -1660,19 +1657,6 @@ CompositorBridgeParent::NewCompositor(const nsTArray<LayersBackend>& aBackendHin
         failureReason = "SUCCESS";
       }
 
-      // should only report success here
-      if (aBackendHints[i] == LayersBackend::LAYERS_OPENGL){
-        Telemetry::Accumulate(Telemetry::OPENGL_COMPOSITING_FAILURE_ID, failureReason);
-      }
-#ifdef XP_WIN
-      else if (aBackendHints[i] == LayersBackend::LAYERS_D3D9){
-        Telemetry::Accumulate(Telemetry::D3D9_COMPOSITING_FAILURE_ID, failureReason);
-      }
-      else if (aBackendHints[i] == LayersBackend::LAYERS_D3D11){
-        Telemetry::Accumulate(Telemetry::D3D11_COMPOSITING_FAILURE_ID, failureReason);
-      }
-#endif
-
       compositor->SetCompositorID(mCompositorID);
       return compositor;
     }
@@ -1681,18 +1665,15 @@ CompositorBridgeParent::NewCompositor(const nsTArray<LayersBackend>& aBackendHin
     if (aBackendHints[i] == LayersBackend::LAYERS_OPENGL){
       gfxCriticalNote << "[OPENGL] Failed to init compositor with reason: "
                       << failureReason.get();
-      Telemetry::Accumulate(Telemetry::OPENGL_COMPOSITING_FAILURE_ID, failureReason);
     }
 #ifdef XP_WIN
     else if (aBackendHints[i] == LayersBackend::LAYERS_D3D9){
       gfxCriticalNote << "[D3D9] Failed to init compositor with reason: "
                       << failureReason.get();
-      Telemetry::Accumulate(Telemetry::D3D9_COMPOSITING_FAILURE_ID, failureReason);
     }
     else if (aBackendHints[i] == LayersBackend::LAYERS_D3D11){
       gfxCriticalNote << "[D3D11] Failed to init compositor with reason: "
                       << failureReason.get();
-      Telemetry::Accumulate(Telemetry::D3D11_COMPOSITING_FAILURE_ID, failureReason);
     }
 #endif
   }
diff --git a/gfx/src/DriverCrashGuard.cpp b/gfx/src/DriverCrashGuard.cpp
index 4754c26ad..fd616575b 100644
--- a/gfx/src/DriverCrashGuard.cpp
+++ b/gfx/src/DriverCrashGuard.cpp
@@ -11,7 +11,6 @@
 #include "nsString.h"

 #include "nsXULAppAPI.h"

 #include "mozilla/Preferences.h"

-#include "mozilla/Telemetry.h"

 #include "mozilla/Services.h"

 #include "mozilla/gfx/Logging.h"

 #include "mozilla/dom/ContentChild.h"

@@ -469,20 +468,7 @@ D3D11LayersCrashGuard::LogFeatureDisabled()
 void

 D3D11LayersCrashGuard::RecordTelemetry(TelemetryState aState)

 {

-  // D3D11LayersCrashGuard is a no-op in the child process.

-  if (!XRE_IsParentProcess()) {

-    return;

-  }

-

-  // Since we instantiate this class more than once, make sure we only record

-  // the first state (since that is really all we care about).

-  static bool sTelemetryStateRecorded = false;

-  if (sTelemetryStateRecorded) {

-    return;

-  }

-

-  Telemetry::Accumulate(Telemetry::GRAPHICS_DRIVER_STARTUP_TEST, int32_t(aState));

-  sTelemetryStateRecorded = true;

+  /* STUB */

 }

 

 D3D9VideoCrashGuard::D3D9VideoCrashGuard(dom::ContentParent* aContentParent)

diff --git a/gfx/thebes/DeviceManagerDx.cpp b/gfx/thebes/DeviceManagerDx.cpp
index 2f2693c76..e1cfc5763 100644
--- a/gfx/thebes/DeviceManagerDx.cpp
+++ b/gfx/thebes/DeviceManagerDx.cpp
@@ -10,7 +10,6 @@
 #include "gfxPrefs.h"
 #include "gfxWindowsPlatform.h"
 #include "mozilla/D3DMessageUtils.h"
-#include "mozilla/Telemetry.h"
 #include "mozilla/WindowsVersion.h"
 #include "mozilla/gfx/GraphicsMessages.h"
 #include "mozilla/gfx/Logging.h"
@@ -589,10 +588,6 @@ DeviceManagerDx::MaybeResetAndReacquireDevices()
     return false;
   }
 
-  if (resetReason != DeviceResetReason::FORCED_RESET) {
-    Telemetry::Accumulate(Telemetry::DEVICE_RESET_REASON, uint32_t(resetReason));
-  }
-
   bool createCompositorDevice = !!mCompositorDevice;
   bool createContentDevice = !!mContentDevice;
 
@@ -724,7 +719,6 @@ DeviceManagerDx::GetAnyDeviceRemovedReason(DeviceResetReason* aOutReason)
 void
 DeviceManagerDx::ForceDeviceReset(ForcedDeviceResetReason aReason)
 {
-  Telemetry::Accumulate(Telemetry::FORCED_DEVICE_RESET_REASON, uint32_t(aReason));
   {
     MutexAutoLock lock(mDeviceLock);
     mDeviceResetReason = Some(DeviceResetReason::FORCED_RESET);
diff --git a/gfx/thebes/gfxDWriteFontList.cpp b/gfx/thebes/gfxDWriteFontList.cpp
index d159fddb1..5cc1fbb92 100644
--- a/gfx/thebes/gfxDWriteFontList.cpp
+++ b/gfx/thebes/gfxDWriteFontList.cpp
@@ -14,7 +14,6 @@
 #include "nsCharSeparatedTokenizer.h"
 #include "mozilla/Preferences.h"
 #include "mozilla/Sprintf.h"
-#include "mozilla/Telemetry.h"
 #include "nsDirectoryServiceUtils.h"
 #include "nsDirectoryServiceDefs.h"
 #include "nsAppDirectoryServiceDefs.h"
@@ -864,8 +863,6 @@ gfxDWriteFontList::InitFontListForPlatform()
     hr = gfxWindowsPlatform::GetPlatform()->GetDWriteFactory()->
         GetGdiInterop(getter_AddRefs(mGDIInterop));
     if (FAILED(hr)) {
-        Telemetry::Accumulate(Telemetry::DWRITEFONT_INIT_PROBLEM,
-                              uint32_t(errGDIInterop));
         return NS_ERROR_FAILURE;
     }
 
@@ -878,8 +875,6 @@ gfxDWriteFontList::InitFontListForPlatform()
     NS_ASSERTION(SUCCEEDED(hr), "GetSystemFontCollection failed!");
 
     if (FAILED(hr)) {
-        Telemetry::Accumulate(Telemetry::DWRITEFONT_INIT_PROBLEM,
-                              uint32_t(errSystemFontCollection));
         return NS_ERROR_FAILURE;
     }
 
@@ -891,8 +886,6 @@ gfxDWriteFontList::InitFontListForPlatform()
     NS_ASSERTION(mFontFamilies.Count() != 0,
                  "no fonts found in the system fontlist -- holy crap batman!");
     if (mFontFamilies.Count() == 0) {
-        Telemetry::Accumulate(Telemetry::DWRITEFONT_INIT_PROBLEM,
-                              uint32_t(errNoFonts));
         return NS_ERROR_FAILURE;
     }
 
@@ -1001,9 +994,6 @@ gfxDWriteFontList::InitFontListForPlatform()
     }
 
     elapsedTime = (t5.QuadPart - t1.QuadPart) * 1000.0 / frequency.QuadPart;
-    Telemetry::Accumulate(Telemetry::DWRITEFONT_DELAYEDINITFONTLIST_TOTAL, elapsedTime);
-    Telemetry::Accumulate(Telemetry::DWRITEFONT_DELAYEDINITFONTLIST_COUNT,
-                          mSystemFonts->GetFontFamilyCount());
     LOG_FONTINIT((
        "(fontinit) Total time in InitFontList:    %9.3f ms (families: %d, %s)\n",
        elapsedTime, mSystemFonts->GetFontFamilyCount(),
@@ -1013,7 +1003,6 @@ gfxDWriteFontList::InitFontListForPlatform()
     LOG_FONTINIT(("(fontinit)  --- base/interop obj initialization init: %9.3f ms\n", elapsedTime));
 
     elapsedTime = (t3.QuadPart - t2.QuadPart) * 1000.0 / frequency.QuadPart;
-    Telemetry::Accumulate(Telemetry::DWRITEFONT_DELAYEDINITFONTLIST_COLLECT, elapsedTime);
     LOG_FONTINIT(("(fontinit)  --- GetSystemFontCollection:  %9.3f ms\n", elapsedTime));
 
     elapsedTime = (t4.QuadPart - t3.QuadPart) * 1000.0 / frequency.QuadPart;
@@ -1455,7 +1444,6 @@ gfxDWriteFontList::PlatformGlobalFontFallback(const uint32_t aCh,
             *aMatchedFamily = family;
             return fontEntry;
         }
-        Telemetry::Accumulate(Telemetry::BAD_FALLBACK_FONT, true);
     }
 
     return nullptr;
diff --git a/gfx/thebes/gfxFont.cpp b/gfx/thebes/gfxFont.cpp
index d0b747fff..8ccd721f8 100644
--- a/gfx/thebes/gfxFont.cpp
+++ b/gfx/thebes/gfxFont.cpp
@@ -229,7 +229,6 @@ gfxFontCache::Lookup(const gfxFontEntry* aFontEntry,
     Key key(aFontEntry, aStyle, aUnicodeRangeMap);
     HashEntry *entry = mFonts.GetEntry(key);
 
-    Telemetry::Accumulate(Telemetry::FONT_CACHE_HIT, entry != nullptr);
     if (!entry)
         return nullptr;
 
@@ -2578,9 +2577,6 @@ gfxFont::GetShapedWord(DrawTarget *aDrawTarget,
 
     if (sw) {
         sw->ResetAge();
-        Telemetry::Accumulate((isContent ? Telemetry::WORD_CACHE_HITS_CONTENT :
-                                   Telemetry::WORD_CACHE_HITS_CHROME),
-                              aLength);
 #ifndef RELEASE_OR_BETA
         if (aTextPerf) {
             aTextPerf->current.wordCacheHit++;
@@ -2589,9 +2585,6 @@ gfxFont::GetShapedWord(DrawTarget *aDrawTarget,
         return sw;
     }
 
-    Telemetry::Accumulate((isContent ? Telemetry::WORD_CACHE_MISSES_CONTENT :
-                               Telemetry::WORD_CACHE_MISSES_CHROME),
-                          aLength);
 #ifndef RELEASE_OR_BETA
     if (aTextPerf) {
         aTextPerf->current.wordCacheMiss++;
diff --git a/gfx/thebes/gfxGradientCache.cpp b/gfx/thebes/gfxGradientCache.cpp
index fa25bd78c..bfa82685c 100644
--- a/gfx/thebes/gfxGradientCache.cpp
+++ b/gfx/thebes/gfxGradientCache.cpp
@@ -8,7 +8,6 @@
 #include "PLDHashTable.h"
 #include "nsExpirationTracker.h"
 #include "nsClassHashtable.h"
-#include "mozilla/Telemetry.h"
 #include "gfxGradientCache.h"
 #include <time.h>
 
@@ -127,7 +126,6 @@ class GradientCache final : public nsExpirationTracker<GradientCacheData,4>
     {
       srand(time(nullptr));
       mTimerPeriod = rand() % MAX_GENERATION_MS + 1;
-      Telemetry::Accumulate(Telemetry::GRADIENT_RETENTION_TIME, mTimerPeriod);
     }
 
     virtual void NotifyExpired(GradientCacheData* aObject)
diff --git a/gfx/thebes/gfxMacPlatformFontList.mm b/gfx/thebes/gfxMacPlatformFontList.mm
index bf958a90b..3d2fcc6a9 100644
--- a/gfx/thebes/gfxMacPlatformFontList.mm
+++ b/gfx/thebes/gfxMacPlatformFontList.mm
@@ -65,7 +65,6 @@
 #include "mozilla/MemoryReporting.h"
 #include "mozilla/Preferences.h"
 #include "mozilla/Sprintf.h"
-#include "mozilla/Telemetry.h"
 #include "mozilla/gfx/2D.h"
 
 #include <unistd.h>
@@ -1043,10 +1042,6 @@ gfxMacPlatformFontList::PlatformGlobalFontFallback(const uint32_t aCh,
         }
     }
 
-    if (cantUseFallbackFont) {
-        Telemetry::Accumulate(Telemetry::BAD_FALLBACK_FONT, cantUseFallbackFont);
-    }
-
     ::CFRelease(str);
 
     return fontEntry;
diff --git a/gfx/thebes/gfxPlatform.cpp b/gfx/thebes/gfxPlatform.cpp
index 171d1bec9..d5af16a19 100644
--- a/gfx/thebes/gfxPlatform.cpp
+++ b/gfx/thebes/gfxPlatform.cpp
@@ -361,7 +361,6 @@ class CrashTelemetryEvent : public Runnable
 
   NS_IMETHOD Run() override {
     MOZ_ASSERT(NS_IsMainThread());
-    Telemetry::Accumulate(Telemetry::GFX_CRASH, mReason);
     return NS_OK;
   }
 
@@ -374,29 +373,7 @@ NS_IMPL_ISUPPORTS_INHERITED0(CrashTelemetryEvent, Runnable);
 void
 CrashStatsLogForwarder::CrashAction(LogReason aReason)
 {
-#ifndef RELEASE_OR_BETA
-  // Non-release builds crash by default, but will use telemetry
-  // if this environment variable is present.
-  static bool useTelemetry = gfxEnv::GfxDevCrashTelemetry();
-#else
-  // Release builds use telemetry by default, but will crash instead
-  // if this environment variable is present.
-  static bool useTelemetry = !gfxEnv::GfxDevCrashMozCrash();
-#endif
-
-  if (useTelemetry) {
-    // The callers need to assure that aReason is in the range
-    // that the telemetry call below supports.
-    if (NS_IsMainThread()) {
-      Telemetry::Accumulate(Telemetry::GFX_CRASH, (uint32_t)aReason);
-    } else {
-      nsCOMPtr<nsIRunnable> r1 = new CrashTelemetryEvent((uint32_t)aReason);
-      NS_DispatchToMainThread(r1);
-    }
-  } else {
-    // ignoring aReason, we can get the information we need from the stack
-    MOZ_CRASH("GFX_CRASH");
-  }
+  MOZ_CRASH("GFX_CRASH");
 }
 
 NS_IMPL_ISUPPORTS(SRGBOverrideObserver, nsIObserver, nsISupportsWeakReference)
diff --git a/gfx/thebes/gfxPlatformFontList.cpp b/gfx/thebes/gfxPlatformFontList.cpp
index e12f4e197..59df40666 100644
--- a/gfx/thebes/gfxPlatformFontList.cpp
+++ b/gfx/thebes/gfxPlatformFontList.cpp
@@ -322,8 +322,6 @@ gfxPlatformFontList::InitOtherFamilyNames()
         mOtherFamilyNamesInitialized = true;
     }
     TimeStamp end = TimeStamp::Now();
-    Telemetry::AccumulateTimeDelta(Telemetry::FONTLIST_INITOTHERFAMILYNAMES,
-                                   start, end);
 
     if (LOG_FONTINIT_ENABLED()) {
         TimeDuration elapsed = end - start;
@@ -370,8 +368,6 @@ gfxPlatformFontList::SearchFamiliesForFaceName(const nsAString& aFaceName)
     lookup = FindFaceName(aFaceName);
 
     TimeStamp end = TimeStamp::Now();
-    Telemetry::AccumulateTimeDelta(Telemetry::FONTLIST_INITFACENAMELISTS,
-                                   start, end);
     if (LOG_FONTINIT_ENABLED()) {
         TimeDuration elapsed = end - start;
         LOG_FONTINIT(("(fontinit) SearchFamiliesForFaceName took %8.2f ms %s %s",
@@ -587,16 +583,8 @@ gfxPlatformFontList::SystemFindFontForChar(uint32_t aCh, uint32_t aNextCh,
     static bool first = true;
     int32_t intElapsed = int32_t(first ? elapsed.ToMilliseconds() :
                                          elapsed.ToMicroseconds());
-    Telemetry::Accumulate((first ? Telemetry::SYSTEM_FONT_FALLBACK_FIRST :
-                                   Telemetry::SYSTEM_FONT_FALLBACK),
-                          intElapsed);
     first = false;
 
-    // track the script for which fallback occurred (incremented one make it
-    // 1-based)
-    Telemetry::Accumulate(Telemetry::SYSTEM_FONT_FALLBACK_SCRIPT,
-                          int(aRunScript) + 1);
-
     return fontEntry;
 }
 
diff --git a/gfx/thebes/gfxUserFontSet.cpp b/gfx/thebes/gfxUserFontSet.cpp
index 23c26d9fe..72c54d9b5 100644
--- a/gfx/thebes/gfxUserFontSet.cpp
+++ b/gfx/thebes/gfxUserFontSet.cpp
@@ -453,8 +453,6 @@ gfxUserFontEntry::LoadNextSrc()
                                   gfxUserFontData::kUnknownCompression);
                 mPlatformFontEntry = fe;
                 SetLoadState(STATUS_LOADED);
-                Telemetry::Accumulate(Telemetry::WEBFONT_SRCTYPE,
-                                      currSrc.mSourceType + 1);
                 return;
             } else {
                 LOG(("userfonts (%p) [src %d] failed local: (%s) for (%s)\n",
@@ -517,8 +515,6 @@ gfxUserFontEntry::LoadNextSrc()
                         if (NS_SUCCEEDED(rv) &&
                             LoadPlatformFont(buffer, bufferLength)) {
                             SetLoadState(STATUS_LOADED);
-                            Telemetry::Accumulate(Telemetry::WEBFONT_SRCTYPE,
-                                                  currSrc.mSourceType + 1);
                             return;
                         } else {
                             mFontSet->LogMessage(this,
@@ -572,8 +568,6 @@ gfxUserFontEntry::LoadNextSrc()
                 // LoadPlatformFont takes ownership of the buffer, so no need
                 // to free it here.
                 SetLoadState(STATUS_LOADED);
-                Telemetry::Accumulate(Telemetry::WEBFONT_SRCTYPE,
-                                      currSrc.mSourceType + 1);
                 return;
             } else {
                 mFontSet->LogMessage(this,
@@ -617,7 +611,6 @@ gfxUserFontEntry::LoadPlatformFont(const uint8_t* aFontData, uint32_t& aLength)
 
     gfxUserFontType fontType =
         gfxFontUtils::DetermineFontDataType(aFontData, aLength);
-    Telemetry::Accumulate(Telemetry::WEBFONT_FONTTYPE, uint32_t(fontType));
 
     // Unwrap/decompress/sanitize or otherwise munge the downloaded data
     // to make a usable sfnt structure.
@@ -650,13 +643,6 @@ gfxUserFontEntry::LoadPlatformFont(const uint8_t* aFontData, uint32_t& aLength)
     if (saneData) {
         if (saneLen) {
             fontCompressionRatio = uint32_t(100.0 * aLength / saneLen + 0.5);
-            if (fontType == GFX_USERFONT_WOFF ||
-                fontType == GFX_USERFONT_WOFF2) {
-                Telemetry::Accumulate(fontType == GFX_USERFONT_WOFF ?
-                                      Telemetry::WEBFONT_COMPRESSION_WOFF :
-                                      Telemetry::WEBFONT_COMPRESSION_WOFF2,
-                                      fontCompressionRatio);
-                }
         }
 
         // The sanitizer ensures that we have a valid sfnt and a usable
diff --git a/gfx/thebes/gfxWindowsPlatform.cpp b/gfx/thebes/gfxWindowsPlatform.cpp
index a988859eb..b1ede7ad2 100755
--- a/gfx/thebes/gfxWindowsPlatform.cpp
+++ b/gfx/thebes/gfxWindowsPlatform.cpp
@@ -430,10 +430,6 @@ gfxWindowsPlatform::HandleDeviceReset()
     return false;
   }
 
-  if (resetReason != DeviceResetReason::FORCED_RESET) {
-    Telemetry::Accumulate(Telemetry::DEVICE_RESET_REASON, uint32_t(resetReason));
-  }
-
   // Remove devices and adapters.
   DeviceManagerDx::Get()->ResetDevices();
 
@@ -1442,15 +1438,7 @@ gfxWindowsPlatform::InitializeD3D11Config()
 /* static */ void
 gfxWindowsPlatform::RecordContentDeviceFailure(TelemetryDeviceCode aDevice)
 {
-  // If the parent process fails to acquire a device, we record this
-  // normally as part of the environment. The exceptional case we're
-  // looking for here is when the parent process successfully acquires
-  // a device, but the content process fails to acquire the same device.
-  // This would not normally be displayed in about:support.
-  if (!XRE_IsContentProcess()) {
-    return;
-  }
-  Telemetry::Accumulate(Telemetry::GFX_CONTENT_FAILED_TO_ACQUIRE_DEVICE, uint32_t(aDevice));
+  /* STUB */
 }
 
 void