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.

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;
   }