Bug 1363278 Get rid of nsIPhonetic and HTMLInputElement.phonetic r=smaug

Nobody uses them anymore.  Therefore, we can remove them from the tree.

MozReview-Commit-ID: KTqCeI2eeFW

dom/html/HTMLInputElement.cpp

@@ -21,7 +21,6 @@
 #include "nsITextControlElement.h"
 #include "nsIDOMNSEditableElement.h"
 #include "nsIRadioVisitor.h"
-#include "nsIPhonetic.h"
 #include "InputType.h"
 
 #include "HTMLFormSubmissionConstants.h"
@@ -1269,7 +1268,6 @@ NS_INTERFACE_TABLE_HEAD_CYCLE_COLLECTION_INHERITED(HTMLInputElement)
   NS_INTERFACE_TABLE_INHERITED(HTMLInputElement,
                                nsIDOMHTMLInputElement,
                                nsITextControlElement,
-                               nsIPhonetic,
                                imgINotificationObserver,
                                nsIImageLoadingContent,
                                imgIOnloadBlocker,
@@ -6536,19 +6534,6 @@ HTMLInputElement::SetSelectionDirection(const nsAString& aDirection, ErrorResult
   state->SetSelectionDirection(aDirection, aRv);
 }
 
-NS_IMETHODIMP
-HTMLInputElement::GetPhonetic(nsAString& aPhonetic)
-{
-  aPhonetic.Truncate();
-  nsIFormControlFrame* formControlFrame = GetFormControlFrame(true);
-  nsITextControlFrame* textControlFrame = do_QueryFrame(formControlFrame);
-  if (textControlFrame) {
-    textControlFrame->GetPhonetic(aPhonetic);
-  }
-
-  return NS_OK;
-}
-
 #ifdef ACCESSIBILITY
 /*static*/ nsresult
 FireEventForAccessibility(nsIDOMHTMLInputElement* aTarget,