Bug 1728081 - Part 1: Remove nsIForm::GetElementCount; r=smaug

as it is only used internally.

Differential Revision: https://phabricator.services.mozilla.com/D123949

dom/html/HTMLFormElement.cpp

@@ -600,7 +600,7 @@ nsresult HTMLFormElement::DoReset() {
 
   mEverTriedInvalidSubmit = false;
   // JBK walk the elements[] array instead of form frame controls - bug 34297
-  uint32_t numElements = GetElementCount();
+  uint32_t numElements = mControls->Length();
   for (uint32_t elementX = 0; elementX < numElements; ++elementX) {
     // Hold strong ref in case the reset does something weird
     nsCOMPtr<nsIFormControl> controlNode = GetElementAt(elementX);
@@ -1069,9 +1069,6 @@ NotNull<const Encoding*> HTMLFormElement::GetSubmitEncoding() {
 
 // nsIForm
 
-NS_IMETHODIMP_(uint32_t)
-HTMLFormElement::GetElementCount() const { return mControls->Length(); }
-
 Element* HTMLFormElement::IndexedGetter(uint32_t aIndex, bool& aFound) {
   Element* element = mControls->mElements.SafeElementAt(aIndex, nullptr);
   aFound = element != nullptr;