Remove SPS profiler.

- Conditionals and code blocks. (MOZ_ENABLE_PROFILER_SPS)
- Stub out several profiler-only functions.

layout/base/RestyleTracker.cpp

@@ -61,9 +61,6 @@ RestyleTracker::Document() const {
 
 struct RestyleEnumerateData : RestyleTracker::Hints {
   RefPtr<dom::Element> mElement;
-#if defined(MOZ_ENABLE_PROFILER_SPS)
-  UniquePtr<ProfilerBacktrace> mBacktrace;
-#endif
 };
 
 inline void
@@ -257,12 +254,6 @@ RestyleTracker::DoProcessRestyles()
               data->mRestyleHint, MarkerTracingType::START)));
         }
 
-#if defined(MOZ_ENABLE_PROFILER_SPS)
-        Maybe<GeckoProfilerTracingRAII> profilerRAII;
-        if (profiler_feature_active("restyle")) {
-          profilerRAII.emplace("Paint", "Styles", Move(data->mBacktrace));
-        }
-#endif
         ProcessOneRestyle(element, data->mRestyleHint, data->mChangeHint,
                           data->mRestyleHintData);
         AddRestyleRootsIfAwaitingRestyle(data->mDescendants);
@@ -337,9 +328,6 @@ RestyleTracker::DoProcessRestyles()
           // We can move data since we'll be clearing mPendingRestyles after
           // we finish enumerating it.
           restyle->mRestyleHintData = Move(data->mRestyleHintData);
-#if defined(MOZ_ENABLE_PROFILER_SPS)
-          restyle->mBacktrace = Move(data->mBacktrace);
-#endif
 
 #ifdef RESTYLE_LOGGING
           count++;
@@ -365,12 +353,6 @@ RestyleTracker::DoProcessRestyles()
                       index++, count);
           LOG_RESTYLE_INDENT();
 
-#if defined(MOZ_ENABLE_PROFILER_SPS)
-          Maybe<GeckoProfilerTracingRAII> profilerRAII;
-          if (profiler_feature_active("restyle")) {
-            profilerRAII.emplace("Paint", "Styles", Move(currentRestyle->mBacktrace));
-          }
-#endif
           if (isTimelineRecording) {
             timelines->AddMarkerForDocShell(docShell, Move(
               MakeUnique<RestyleTimelineMarker>(

layout/base/RestyleTracker.h

@@ -22,10 +22,6 @@
 #include "GeckoProfiler.h"
 #include "mozilla/Maybe.h"
 
-#if defined(MOZ_ENABLE_PROFILER_SPS)
-#include "ProfilerBacktrace.h"
-#endif
-
 namespace mozilla {
 
 class RestyleManager;
@@ -128,9 +124,6 @@ public:
     // that we called AddPendingRestyle for and found the element this is
     // the RestyleData for as its nearest restyle root.
     nsTArray<RefPtr<Element>> mDescendants;
-#if defined(MOZ_ENABLE_PROFILER_SPS)
-    UniquePtr<ProfilerBacktrace> mBacktrace;
-#endif
   };
 
   /**
@@ -265,11 +258,6 @@ RestyleTracker::AddPendingRestyleToTable(Element* aElement,
   if (!existingData) {
     RestyleData* rd =
       new RestyleData(aRestyleHint, aMinChangeHint, aRestyleHintData);
-#if defined(MOZ_ENABLE_PROFILER_SPS)
-    if (profiler_feature_active("restyle")) {
-      rd->mBacktrace.reset(profiler_get_backtrace());
-    }
-#endif
     mPendingRestyles.Put(aElement, rd);
     return false;
   }

layout/base/nsPresShell.cpp

@@ -4064,23 +4064,6 @@ PresShell::FlushPendingNotifications(mozilla::ChangesToFlush aFlush)
    */
   mozFlushType flushType = aFlush.mFlushType;
 
-#ifdef MOZ_ENABLE_PROFILER_SPS
-  static const char flushTypeNames[][20] = {
-    "Content",
-    "ContentAndNotify",
-    "Style",
-    "InterruptibleLayout",
-    "Layout",
-    "Display"
-  };
-
-  // Make sure that we don't miss things added to mozFlushType!
-  MOZ_ASSERT(static_cast<uint32_t>(flushType) <= ArrayLength(flushTypeNames));
-
-  PROFILER_LABEL_PRINTF("PresShell", "Flush",
-    js::ProfileEntry::Category::GRAPHICS, "(Flush_%s)", flushTypeNames[flushType - 1]);
-#endif
-
 #ifdef ACCESSIBILITY
 #ifdef DEBUG
   nsAccessibilityService* accService = GetAccService();