Bug 1645084 - Stop collecting telemetry for outerWidth/outerHeight features of window.open in web content. r=smaug

Differential Revision: https://phabricator.services.mozilla.com/D81969

toolkit/components/telemetry/Histograms.json

@@ -15145,16 +15145,6 @@
     "n_buckets": 50,
     "description": "Time in milliseconds spent in the layout system per Refresh Driver tick."
   },
-  "WINDOW_OPEN_OUTER_SIZE": {
-    "record_in_processes": ["main", "content"],
-    "products": ["firefox"],
-    "alert_emails": ["tfujisawa.birchill@mozilla.com"],
-    "expires_in_version": "80",
-    "kind": "boolean",
-    "bug_numbers": [1624150],
-    "releaseChannelCollection": "opt-out",
-    "description": "Flag indicating consumer of non-standard outerWidth/outerHeight features in window.open"
-  },
   "WINDOW_REMOTE_SUBFRAMES_ENABLED_STATUS": {
     "record_in_processes": ["main"],
     "products": ["firefox"],

toolkit/components/windowwatcher/nsWindowWatcher.cpp

@@ -62,7 +62,6 @@
 #include "mozilla/Preferences.h"
 #include "mozilla/ResultExtensions.h"
 #include "mozilla/StaticPrefs_full_screen_api.h"
-#include "mozilla/Telemetry.h"
 #include "mozilla/dom/Element.h"
 #include "mozilla/dom/Storage.h"
 #include "mozilla/dom/ScriptSettings.h"
@@ -686,13 +685,6 @@ nsresult nsWindowWatcher::OpenWindowInternal(
 
   bool isCallerChrome = nsContentUtils::LegacyIsCallerChromeOrNativeCode();
 
-  if (!hasChromeParent) {
-    bool outerSizeUsed =
-        features.Exists("outerwidth") || features.Exists("outerheight");
-    mozilla::Telemetry::Accumulate(mozilla::Telemetry::WINDOW_OPEN_OUTER_SIZE,
-                                   outerSizeUsed);
-  }
-
   SizeSpec sizeSpec;
   CalcSizeSpec(features, sizeSpec);