Bug 1120860 - Measure whether an <input type=password> is associated with a <form> in BindToTree. r=smaug

dom/html/HTMLInputElement.cpp

@@ -17,6 +17,7 @@
 #include "nsIRadioVisitor.h"
 #include "nsIPhonetic.h"
 
+#include "mozilla/Telemetry.h"
 #include "nsIControllers.h"
 #include "nsIStringBundle.h"
 #include "nsFocusManager.h"
@@ -4497,6 +4498,12 @@ HTMLInputElement::BindToTree(nsIDocument* aDocument, nsIContent* aParent,
   // And now make sure our state is up to date
   UpdateState(false);
 
+#ifdef EARLY_BETA_OR_EARLIER
+  if (mType == NS_FORM_INPUT_PASSWORD) {
+    Telemetry::Accumulate(Telemetry::PWMGR_PASSWORD_INPUT_IN_FORM, !!mForm);
+  }
+#endif
+
   return rv;
 }