Bug 1351860 - Move mType from HTMLInputElement to nsIFormControl and make GetType non-virtual inlined, r=jessica

dom/html/HTMLInputElement.h

@@ -164,7 +164,6 @@ public:
   NS_IMETHOD SetUserInput(const nsAString& aInput) override;
 
   // Overriden nsIFormControl methods
-  NS_IMETHOD_(uint32_t) GetType() const override { return mType; }
   NS_IMETHOD Reset() override;
   NS_IMETHOD SubmitNamesValues(HTMLFormSubmission* aFormSubmission) override;
   NS_IMETHOD SaveState() override;
@@ -1609,12 +1608,6 @@ protected:
   // Milliseconds in a day.
   static const double kMsPerDay;
 
-
-  /**
-   * The type of this input (<input type=...>) as an integer.
-   * @see nsIFormControl.h (specifically NS_FORM_INPUT_*)
-   */
-  uint8_t                  mType;
   nsContentUtils::AutocompleteAttrState mAutocompleteAttrState;
   bool                     mDisabledChanged     : 1;
   bool                     mValueChanged        : 1;