Telemetry: Remove stubs and related code

layout/base/nsDisplayList.cpp

@@ -61,7 +61,6 @@
 #include "mozilla/OperatorNewExtensions.h"
 #include "mozilla/PendingAnimationTracker.h"
 #include "mozilla/Preferences.h"
-#include "mozilla/Telemetry.h"
 #include "mozilla/UniquePtr.h"
 #include "mozilla/Unused.h"
 #include "mozilla/gfx/gfxVars.h"
@@ -1857,7 +1856,6 @@ already_AddRefed<LayerManager> nsDisplayList::PaintRoot(nsDisplayListBuilder* aB
 
   RefPtr<ContainerLayer> root;
   {
-    PaintTelemetry::AutoRecord record(PaintTelemetry::Metric::Layerization);
     root = layerBuilder->
       BuildContainerLayerFor(aBuilder, layerManager, frame, nullptr, this,
                              containerParameters, nullptr);
@@ -7453,100 +7451,3 @@ nsDisplayFilter::PrintEffects(nsACString& aTo)
   aTo += ")";
 }
 #endif
-
-namespace mozilla {
-
-uint32_t PaintTelemetry::sPaintLevel = 0;
-uint32_t PaintTelemetry::sMetricLevel = 0;
-EnumeratedArray<PaintTelemetry::Metric,
-                PaintTelemetry::Metric::COUNT,
-                double> PaintTelemetry::sMetrics;
-
-PaintTelemetry::AutoRecordPaint::AutoRecordPaint()
-{
-  // Don't record nested paints.
-  if (sPaintLevel++ > 0) {
-    return;
-  }
-
-  // Reset metrics for a new paint.
-  for (auto& metric : sMetrics) {
-    metric = 0.0;
-  }
-  mStart = TimeStamp::Now();
-}
-
-PaintTelemetry::AutoRecordPaint::~AutoRecordPaint()
-{
-  MOZ_ASSERT(sPaintLevel != 0);
-  if (--sPaintLevel > 0) {
-    return;
-  }
-
-  // If we're in multi-process mode, don't include paint times for the parent
-  // process.
-  if (gfxVars::BrowserTabsRemoteAutostart() && XRE_IsParentProcess()) {
-    return;
-  }
-
-  double totalMs = (TimeStamp::Now() - mStart).ToMilliseconds();
-
-  // 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) {
-    return;
-  }
-
-  auto record = [=](const char* aKey, double aDurationMs) -> void {
-    MOZ_ASSERT(aDurationMs <= totalMs);
-
-    uint32_t amount = static_cast<int32_t>((aDurationMs / totalMs) * 100.0);
-  };
-
-  double dlMs = sMetrics[Metric::DisplayList];
-  double flbMs = sMetrics[Metric::Layerization];
-  double rMs = sMetrics[Metric::Rasterization];
-
-  // Record all permutations since aggregation makes it difficult to
-  // correlate. For example we can't derive "flb+r" from "dl" because we
-  // don't know the total time associated with a bucket entry. So we just
-  // play it safe and include everything. We can however derive "other" time
-  // from the final permutation.
-  record("dl", dlMs);
-  record("flb", flbMs);
-  record("r", rMs);
-  record("dl,flb", dlMs + flbMs);
-  record("dl,r", dlMs + rMs);
-  record("flb,r", flbMs + rMs);
-  record("dl,flb,r", dlMs + flbMs + rMs);
-}
-
-PaintTelemetry::AutoRecord::AutoRecord(Metric aMetric)
- : mMetric(aMetric)
-{
-  // Don't double-record anything nested.
-  if (sMetricLevel++ > 0) {
-    return;
-  }
-
-  // Don't record inside nested paints, or outside of paints.
-  if (sPaintLevel != 1) {
-    return;
-  }
-
-  mStart = TimeStamp::Now();
-}
-
-PaintTelemetry::AutoRecord::~AutoRecord()
-{
-  MOZ_ASSERT(sMetricLevel != 0);
-
-  sMetricLevel--;
-  if (mStart.IsNull()) {
-    return;
-  }
-
-  sMetrics[mMetric] += (TimeStamp::Now() - mStart).ToMilliseconds();
-}
-
-} // namespace mozilla

layout/base/nsDisplayList.h

@@ -4508,43 +4508,4 @@ public:
   mutable mozilla::Maybe<bool> mIsFrameSelected;
 };
 
-namespace mozilla {
-
-class PaintTelemetry
-{
- public:
-  enum class Metric {
-    DisplayList,
-    Layerization,
-    Rasterization,
-    COUNT,
-  };
-
-  class AutoRecord
-  {
-   public:
-    explicit AutoRecord(Metric aMetric);
-    ~AutoRecord();
-   private:
-    Metric mMetric;
-    mozilla::TimeStamp mStart;
-  };
-
-  class AutoRecordPaint
-  {
-   public:
-    AutoRecordPaint();
-    ~AutoRecordPaint();
-   private:
-    mozilla::TimeStamp mStart;
-  };
-
- private:
-  static uint32_t sPaintLevel;
-  static uint32_t sMetricLevel;
-  static mozilla::EnumeratedArray<Metric, Metric::COUNT, double> sMetrics;
-};
-
-} // namespace mozilla
-
 #endif /*NSDISPLAYLIST_H_*/

layout/base/nsLayoutUtils.cpp

@@ -111,7 +111,6 @@
 #include "FrameLayerBuilder.h"
 #include "mozilla/layers/APZCTreeManager.h"
 #include "mozilla/layers/CompositorBridgeChild.h"
-#include "mozilla/Telemetry.h"
 #include "mozilla/EventDispatcher.h"
 #include "mozilla/EventStateManager.h"
 #include "mozilla/RuleNodeCacheConditions.h"
@@ -3534,8 +3533,6 @@ nsLayoutUtils::PaintFrame(nsRenderingContext* aRenderingContext, nsIFrame* aFram
     PROFILER_LABEL("nsLayoutUtils", "PaintFrame::BuildDisplayList",
       js::ProfileEntry::Category::GRAPHICS);
 
-
-    PaintTelemetry::AutoRecord record(PaintTelemetry::Metric::DisplayList);
     aFrame->BuildDisplayListForStackingContext(&builder, dirtyRect, &list);
   }
 

layout/base/nsPresShell.cpp

@@ -170,7 +170,6 @@
 #include "mozilla/css/ImageLoader.h"
 #include "mozilla/dom/DocumentTimeline.h"
 #include "mozilla/Preferences.h"
-#include "mozilla/Telemetry.h"
 #include "nsCanvasFrame.h"
 #include "nsIImageLoadingContent.h"
 #include "nsImageFrame.h"
@@ -9394,9 +9393,6 @@ PresShell::DoVerifyReflow()
 }
 #endif
 
-// used with Telemetry metrics
-#define NS_LONG_REFLOW_TIME_MS    5000
-
 bool
 PresShell::ProcessReflowCommands(bool aInterruptible)
 {

layout/base/nsRefreshDriver.cpp

@@ -55,7 +55,6 @@
 #include "nsDocShell.h"
 #include "nsISimpleEnumerator.h"
 #include "nsJSEnvironment.h"
-#include "mozilla/Telemetry.h"
 #include "gfxPrefs.h"
 #include "BackgroundChild.h"
 #include "mozilla/ipc/PBackgroundChild.h"
@@ -524,46 +523,10 @@ private:
   private:
     ~RefreshDriverVsyncObserver() = default;
 
-    void RecordTelemetryProbes(TimeStamp aVsyncTimestamp)
-    {
-      MOZ_ASSERT(NS_IsMainThread());
-    #ifndef ANDROID  /* bug 1142079 */
-      if (XRE_IsParentProcess()) {
-        TimeDuration vsyncLatency = TimeStamp::Now() - aVsyncTimestamp;
-        uint32_t sample = (uint32_t)vsyncLatency.ToMilliseconds();
-        RecordJank(sample);
-      } else if (mVsyncRate != TimeDuration::Forever()) {
-        TimeDuration contentDelay = (TimeStamp::Now() - mLastChildTick) - mVsyncRate;
-        if (contentDelay.ToMilliseconds() < 0 ){
-          // Vsyncs are noisy and some can come at a rate quicker than
-          // the reported hardware rate. In those cases, consider that we have 0 delay.
-          contentDelay = TimeDuration::FromMilliseconds(0);
-        }
-        uint32_t sample = (uint32_t)contentDelay.ToMilliseconds();
-        RecordJank(sample);
-      } else {
-        // Request the vsync rate from the parent process. Might be a few vsyncs
-        // until the parent responds.
-        mVsyncRate = mVsyncRefreshDriverTimer->mVsyncChild->GetVsyncRate();
-      }
-    #endif
-    }
-
-    void RecordJank(uint32_t aJankMS)
-    {
-      uint32_t duration = 1 /* ms */;
-      for (size_t i = 0;
-           i < mozilla::ArrayLength(sJankLevels) && duration < aJankMS;
-           ++i, duration *= 2) {
-        sJankLevels[i]++;
-      }
-    }
-
     void TickRefreshDriver(TimeStamp aVsyncTimestamp)
     {
       MOZ_ASSERT(NS_IsMainThread());
 
-      RecordTelemetryProbes(aVsyncTimestamp);
       if (XRE_IsParentProcess()) {
         MonitorAutoLock lock(mRefreshTickLock);
         aVsyncTimestamp = mRecentVsync;
@@ -2006,7 +1969,6 @@ nsRefreshDriver::Tick(int64_t aNowEpoch, TimeStamp aNowTime)
     mViewManagerFlushIsPending = false;
     RefPtr<nsViewManager> vm = mPresContext->GetPresShell()->GetViewManager();
     {
-      PaintTelemetry::AutoRecordPaint record;
       vm->ProcessPendingUpdates();
     }