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.

8 files changed, 1 insertions, 161 deletions

diff --git a/dom/base/nsDOMClassInfo.cpp b/dom/base/nsDOMClassInfo.cpp
index d125e5ad1..1cfde6e1b 100644
--- a/dom/base/nsDOMClassInfo.cpp
+++ b/dom/base/nsDOMClassInfo.cpp
@@ -49,7 +49,6 @@
 #include "nsContentUtils.h"
 #include "nsIDOMGlobalPropertyInitializer.h"
 #include "mozilla/Attributes.h"
-#include "mozilla/Telemetry.h"
 
 // Window scriptable helper includes
 #include "nsScriptNameSpaceManager.h"
@@ -1903,9 +1902,6 @@ LookupComponentsShim(JSContext *cx, JS::Handle<JSObject*> global,
                      nsPIDOMWindowInner *win,
                      JS::MutableHandle<JS::PropertyDescriptor> desc)
 {
-  // Keep track of how often this happens.
-  Telemetry::Accumulate(Telemetry::COMPONENTS_SHIM_ACCESSED_BY_CONTENT, true);
-
   // Warn once.
   nsCOMPtr<nsIDocument> doc = win->GetExtantDoc();
   if (doc) {
diff --git a/dom/base/nsDOMNavigationTiming.cpp b/dom/base/nsDOMNavigationTiming.cpp
index 32ce8a8cb..9c732f2d8 100644
--- a/dom/base/nsDOMNavigationTiming.cpp
+++ b/dom/base/nsDOMNavigationTiming.cpp
@@ -15,7 +15,6 @@
 #include "nsPrintfCString.h"
 #include "mozilla/dom/PerformanceNavigation.h"
 #include "mozilla/TimeStamp.h"
-#include "mozilla/Telemetry.h"
 
 using namespace mozilla;
 
@@ -203,12 +202,6 @@ nsDOMNavigationTiming::NotifyNonBlankPaintForRootContentDocument()
                            mDocShellHasBeenActiveSinceNavigationStart ? "foreground tab" : "this tab was inactive some of the time between navigation start and first non-blank paint");
     PROFILER_MARKER(marker.get());
   }
-
-  if (mDocShellHasBeenActiveSinceNavigationStart) {
-    Telemetry::AccumulateTimeDelta(Telemetry::TIME_TO_NON_BLANK_PAINT_MS,
-                                   mNavigationStart,
-                                   mNonBlankPaint);
-  }
 }
 
 void
diff --git a/dom/base/nsDocument.cpp b/dom/base/nsDocument.cpp
index 8acfd901a..ac9601caf 100644
--- a/dom/base/nsDocument.cpp
+++ b/dom/base/nsDocument.cpp
@@ -25,7 +25,6 @@
 #include "plstr.h"
 #include "mozilla/Sprintf.h"
 
-#include "mozilla/Telemetry.h"
 #include "nsIInterfaceRequestor.h"
 #include "nsIInterfaceRequestorUtils.h"
 #include "nsILoadContext.h"
@@ -12370,101 +12369,7 @@ MightBeAboutOrChromeScheme(nsIURI* aURI)
 void
 nsDocument::ReportUseCounters()
 {
-  static const bool sDebugUseCounters = false;
-  if (mReportedUseCounters) {
-    return;
-  }
-
-  mReportedUseCounters = true;
-
-  if (Telemetry::HistogramUseCounterCount > 0 &&
-      (IsContentDocument() || IsResourceDoc())) {
-    nsCOMPtr<nsIURI> uri;
-    NodePrincipal()->GetURI(getter_AddRefs(uri));
-    if (!uri || MightBeAboutOrChromeScheme(uri)) {
-      return;
-    }
-
-    if (sDebugUseCounters) {
-      nsCString spec = uri->GetSpecOrDefault();
-
-      // URIs can be rather long for data documents, so truncate them to
-      // some reasonable length.
-      spec.Truncate(std::min(128U, spec.Length()));
-      printf("-- Use counters for %s --\n", spec.get());
-    }
-
-    // We keep separate counts for individual documents and top-level
-    // pages to more accurately track how many web pages might break if
-    // certain features were removed.  Consider the case of a single
-    // HTML document with several SVG images and/or iframes with
-    // sub-documents of their own.  If we maintained a single set of use
-    // counters and all the sub-documents use a particular feature, then
-    // telemetry would indicate that we would be breaking N documents if
-    // that feature were removed.  Whereas with a document/top-level
-    // page split, we can see that N documents would be affected, but
-    // only a single web page would be affected.
-
-    // The difference between the values of these two histograms and the
-    // related use counters below tell us how many pages did *not* use
-    // the feature in question.  For instance, if we see that a given
-    // session has destroyed 30 content documents, but a particular use
-    // counter shows only a count of 5, we can infer that the use
-    // counter was *not* used in 25 of those 30 documents.
-    //
-    // We do things this way, rather than accumulating a boolean flag
-    // for each use counter, to avoid sending histograms for features
-    // that don't get widely used.  Doing things in this fashion means
-    // smaller telemetry payloads and faster processing on the server
-    // side.
-    Telemetry::Accumulate(Telemetry::CONTENT_DOCUMENTS_DESTROYED, 1);
-    if (IsTopLevelContentDocument()) {
-      Telemetry::Accumulate(Telemetry::TOP_LEVEL_CONTENT_DOCUMENTS_DESTROYED, 1);
-    }
-
-    for (int32_t c = 0;
-         c < eUseCounter_Count; ++c) {
-      UseCounter uc = static_cast<UseCounter>(c);
-
-      Telemetry::ID id =
-        static_cast<Telemetry::ID>(Telemetry::HistogramFirstUseCounter + uc * 2);
-      bool value = GetUseCounter(uc);
-
-      if (value) {
-        if (sDebugUseCounters) {
-          const char* name = Telemetry::GetHistogramName(id);
-          if (name) {
-            printf("  %s", name);
-          } else {
-            printf("  #%d", id);
-          }
-          printf(": %d\n", value);
-        }
-
-        Telemetry::Accumulate(id, 1);
-      }
-
-      if (IsTopLevelContentDocument()) {
-        id = static_cast<Telemetry::ID>(Telemetry::HistogramFirstUseCounter +
-                                        uc * 2 + 1);
-        value = GetUseCounter(uc) || GetChildDocumentUseCounter(uc);
-
-        if (value) {
-          if (sDebugUseCounters) {
-            const char* name = Telemetry::GetHistogramName(id);
-            if (name) {
-              printf("  %s", name);
-            } else {
-              printf("  #%d", id);
-            }
-            printf(": %d\n", value);
-          }
-
-          Telemetry::Accumulate(id, 1);
-        }
-      }
-    }
-  }
+/* STUB */
 }
 
 void
diff --git a/dom/base/nsFrameMessageManager.cpp b/dom/base/nsFrameMessageManager.cpp
index 6fffd376b..f173678b7 100644
--- a/dom/base/nsFrameMessageManager.cpp
+++ b/dom/base/nsFrameMessageManager.cpp
@@ -32,7 +32,6 @@
 #include "mozilla/CycleCollectedJSContext.h"
 #include "mozilla/IntentionalCrash.h"
 #include "mozilla/Preferences.h"
-#include "mozilla/Telemetry.h"
 #include "mozilla/dom/File.h"
 #include "mozilla/dom/MessagePort.h"
 #include "mozilla/dom/nsIContentParent.h"
@@ -716,9 +715,6 @@ AllowMessage(size_t aDataLength, const nsAString& aMessageName)
   NS_ConvertUTF16toUTF8 messageName(aMessageName);
   messageName.StripChars("0123456789");
 
-  Telemetry::Accumulate(Telemetry::MESSAGE_MANAGER_MESSAGE_SIZE2, messageName,
-                        aDataLength);
-
   // A message includes more than structured clone data, so subtract
   // 20KB to make it more likely that a message within this bound won't
   // result in an overly large IPC message.
@@ -727,9 +723,6 @@ AllowMessage(size_t aDataLength, const nsAString& aMessageName)
     return true;
   }
 
-  Telemetry::Accumulate(Telemetry::REJECTED_MESSAGE_MANAGER_MESSAGE,
-                        messageName);
-
   return false;
 }
 
@@ -2248,7 +2241,6 @@ nsSameProcessAsyncMessageBase::Init(const nsAString& aMessage,
                                     nsIPrincipal* aPrincipal)
 {
   if (!mData.Copy(aData)) {
-    Telemetry::Accumulate(Telemetry::IPC_SAME_PROCESS_MESSAGE_COPY_OOM_KB, aData.DataLength());
     return NS_ERROR_OUT_OF_MEMORY;
   }
 
diff --git a/dom/base/nsGlobalWindow.cpp b/dom/base/nsGlobalWindow.cpp
index 884ad69ca..88cebe42b 100644
--- a/dom/base/nsGlobalWindow.cpp
+++ b/dom/base/nsGlobalWindow.cpp
@@ -211,7 +211,6 @@
 #include "mozilla/AddonPathService.h"
 #include "mozilla/BasePrincipal.h"
 #include "mozilla/Services.h"
-#include "mozilla/Telemetry.h"
 #include "mozilla/dom/Location.h"
 #include "nsHTMLDocument.h"
 #include "nsWrapperCacheInlines.h"
@@ -1759,9 +1758,6 @@ nsGlobalWindow::~nsGlobalWindow()
 
     DropOuterWindowDocs();
   } else {
-    Telemetry::Accumulate(Telemetry::INNERWINDOWS_WITH_MUTATION_LISTENERS,
-                          mMutationBits ? 1 : 0);
-
     if (mListenerManager) {
       mListenerManager->Disconnect();
       mListenerManager = nullptr;
@@ -2695,7 +2691,6 @@ TreatAsRemoteXUL(nsIPrincipal* aPrincipal)
 static bool
 EnablePrivilege(JSContext* cx, unsigned argc, JS::Value* vp)
 {
-  Telemetry::Accumulate(Telemetry::ENABLE_PRIVILEGE_EVER_CALLED, true);
   return xpc::EnableUniversalXPConnect(cx);
 }
 
@@ -3389,9 +3384,6 @@ nsGlobalWindow::InnerSetNewDocument(JSContext* aCx, nsIDocument* aDocument)
   mLastOpenedURI = aDocument->GetDocumentURI();
 #endif
 
-  Telemetry::Accumulate(Telemetry::INNERWINDOWS_WITH_MUTATION_LISTENERS,
-                        mMutationBits ? 1 : 0);
-
   // Clear our mutation bitfield.
   mMutationBits = 0;
 }
@@ -6848,8 +6840,6 @@ FullscreenTransitionTask::Run()
       Preferences::GetUint("full-screen-api.transition.timeout", 1000);
     mTimer->Init(observer, timeout, nsITimer::TYPE_ONE_SHOT);
   } else if (stage == eAfterToggle) {
-    Telemetry::AccumulateTimeDelta(Telemetry::FULLSCREEN_TRANSITION_BLACK_MS,
-                                   mFullscreenChangeStartTime);
     mWidget->PerformFullscreenTransition(nsIWidget::eAfterFullscreenToggle,
                                          mDuration.mFadeOut, mTransitionData,
                                          this);
@@ -11577,11 +11567,6 @@ nsGlobalWindow::ShowSlowScriptDialog()
   unsigned lineno;
   bool hasFrame = JS::DescribeScriptedCaller(cx, &filename, &lineno);
 
-  // Record the slow script event if we haven't done so already for this inner window
-  // (which represents a particular page to the user).
-  if (!mHasHadSlowScript) {
-    Telemetry::Accumulate(Telemetry::SLOW_SCRIPT_PAGE_COUNT, 1);
-  }
   mHasHadSlowScript = true;
 
   if (XRE_IsContentProcess() &&
@@ -11613,10 +11598,6 @@ nsGlobalWindow::ShowSlowScriptDialog()
     return ContinueSlowScriptAndKeepNotifying;
   }
 
-  // Reached only on non-e10s - once per slow script dialog.
-  // On e10s - we probe once at ProcessHangsMonitor.jsm
-  Telemetry::Accumulate(Telemetry::SLOW_SCRIPT_NOTICE_COUNT, 1);
-
   // Get the nsIPrompt interface from the docshell
   nsCOMPtr<nsIDocShell> ds = GetDocShell();
   NS_ENSURE_TRUE(ds, KillSlowScript);
diff --git a/dom/base/nsJSEnvironment.cpp b/dom/base/nsJSEnvironment.cpp
index 3be1a6d2f..4a984d294 100644
--- a/dom/base/nsJSEnvironment.cpp
+++ b/dom/base/nsJSEnvironment.cpp
@@ -70,7 +70,6 @@
 #include "prthread.h"
 
 #include "mozilla/Preferences.h"
-#include "mozilla/Telemetry.h"
 #include "mozilla/dom/BindingUtils.h"
 #include "mozilla/Attributes.h"
 #include "mozilla/dom/asmjscache/AsmJSCache.h"
@@ -1477,22 +1476,8 @@ nsJSContext::EndCycleCollectionCallback(CycleCollectorResults &aResults)
            NS_GC_DELAY - std::min(ccNowDuration, kMaxICCDuration));
   }
 
-  // Log information about the CC via telemetry, JSON and the console.
-  Telemetry::Accumulate(Telemetry::CYCLE_COLLECTOR_FINISH_IGC, gCCStats.mAnyLockedOut);
-  Telemetry::Accumulate(Telemetry::CYCLE_COLLECTOR_SYNC_SKIPPABLE, gCCStats.mRanSyncForgetSkippable);
-  Telemetry::Accumulate(Telemetry::CYCLE_COLLECTOR_FULL, ccNowDuration);
-  Telemetry::Accumulate(Telemetry::CYCLE_COLLECTOR_MAX_PAUSE, gCCStats.mMaxSliceTime);
-
-  if (!sLastCCEndTime.IsNull()) {
-    // TimeBetween returns milliseconds, but we want to report seconds.
-    uint32_t timeBetween = TimeBetween(sLastCCEndTime, gCCStats.mBeginTime) / 1000;
-    Telemetry::Accumulate(Telemetry::CYCLE_COLLECTOR_TIME_BETWEEN, timeBetween);
-  }
   sLastCCEndTime = endCCTimeStamp;
 
-  Telemetry::Accumulate(Telemetry::FORGET_SKIPPABLE_MAX,
-                        sMaxForgetSkippableTime / PR_USEC_PER_MSEC);
-
   PRTime delta = GetCollectionTimeDelta();
 
   uint32_t cleanups = sForgetSkippableBeforeCC ? sForgetSkippableBeforeCC : 1;
diff --git a/dom/base/nsNodeInfoManager.cpp b/dom/base/nsNodeInfoManager.cpp
index 66c8c84cf..80f0aa786 100644
--- a/dom/base/nsNodeInfoManager.cpp
+++ b/dom/base/nsNodeInfoManager.cpp
@@ -392,9 +392,6 @@ nsNodeInfoManager::SetDocumentPrincipal(nsIPrincipal *aPrincipal)
   NS_ASSERTION(aPrincipal, "Must have principal by this point!");
   MOZ_DIAGNOSTIC_ASSERT(!nsContentUtils::IsExpandedPrincipal(aPrincipal),
                         "Documents shouldn't have an expanded principal");
-  if (nsContentUtils::IsExpandedPrincipal(aPrincipal)) {
-    Telemetry::Accumulate(Telemetry::DOCUMENT_WITH_EXPANDED_PRINCIPAL, 1);
-  }
 
   mPrincipal = aPrincipal;
 }
diff --git a/dom/base/nsObjectLoadingContent.cpp b/dom/base/nsObjectLoadingContent.cpp
index 9e9dacf01..709c7aa56 100644
--- a/dom/base/nsObjectLoadingContent.cpp
+++ b/dom/base/nsObjectLoadingContent.cpp
@@ -85,7 +85,6 @@
 #include "mozilla/AsyncEventDispatcher.h"
 #include "mozilla/EventDispatcher.h"
 #include "mozilla/EventStates.h"
-#include "mozilla/Telemetry.h"
 #include "mozilla/dom/HTMLObjectElementBinding.h"
 #include "mozilla/dom/HTMLSharedObjectElement.h"
 #include "nsChannelClassifier.h"
@@ -1149,7 +1148,6 @@ nsObjectLoadingContent::OnStartRequest(nsIRequest *aRequest,
         NS_LITERAL_STRING(" since it was found on an internal Firefox blocklist.");
       console->LogStringMessage(message.get());
     }
-    Telemetry::Accumulate(Telemetry::PLUGIN_BLOCKED_FOR_STABILITY, 1);
     mContentBlockingEnabled = true;
     return NS_ERROR_FAILURE;
   } else if (status == NS_ERROR_TRACKING_URI) {
@@ -1565,7 +1563,6 @@ nsObjectLoadingContent::MaybeRewriteYoutubeEmbed(nsIURI* aURI, nsIURI* aBaseURI,
   }
 
   if (uri.Find("enablejsapi=1", true, 0, -1) != kNotFound) {
-    Telemetry::Accumulate(Telemetry::YOUTUBE_NONREWRITABLE_EMBED_SEEN, 1);
     return;
   }
 
@@ -1585,10 +1582,6 @@ nsObjectLoadingContent::MaybeRewriteYoutubeEmbed(nsIURI* aURI, nsIURI* aBaseURI,
     }
   }
 
-  // If we've made it this far, we've got a rewritable embed. Log it in
-  // telemetry.
-  Telemetry::Accumulate(Telemetry::YOUTUBE_REWRITABLE_EMBED_SEEN, 1);
-
   // If we're pref'd off, return after telemetry has been logged.
   if (!Preferences::GetBool(kPrefYoutubeRewrite)) {
     return;
@@ -3800,8 +3793,6 @@ nsObjectLoadingContent::LegacyCall(JSContext* aCx,
     aRv.Throw(NS_ERROR_FAILURE);
     return;
   }
-
-  Telemetry::Accumulate(Telemetry::PLUGIN_CALLED_DIRECTLY, true);
 }
 
 void