Bug 1378712 - Remove all trailing whitespaces r=Ehsan

MozReview-Commit-ID: Kdz2xtTF9EG

dom/html/HTMLButtonElement.cpp

@@ -91,10 +91,10 @@ NS_INTERFACE_TABLE_TAIL_INHERITING(nsGenericHTMLFormElementWithState)
 NS_IMPL_NSICONSTRAINTVALIDATION_EXCEPT_SETCUSTOMVALIDITY(HTMLButtonElement)
 
 NS_IMETHODIMP
-HTMLButtonElement::SetCustomValidity(const nsAString& aError) 
+HTMLButtonElement::SetCustomValidity(const nsAString& aError)
 {
   nsIConstraintValidation::SetCustomValidity(aError);
-  
+
   UpdateState(true);
 
   return NS_OK;
@@ -156,7 +156,7 @@ HTMLButtonElement::IsHTMLFocusable(bool aWithMouse, bool *aIsFocusable, int32_t
     return true;
   }
 
-  *aIsFocusable = 
+  *aIsFocusable =
 #ifdef XP_MACOSX
     (!aWithMouse || nsFocusManager::sMouseFocusesFormControl) &&
 #endif
@@ -456,7 +456,7 @@ HTMLButtonElement::SaveState()
   if (!mDisabledChanged) {
     return NS_OK;
   }
-  
+
   nsPresState* state = GetPrimaryPresState();
   if (state) {
     // We do not want to save the real disabled state but the disabled
@@ -481,7 +481,7 @@ EventStates
 HTMLButtonElement::IntrinsicState() const
 {
   EventStates state = nsGenericHTMLFormElementWithState::IntrinsicState();
-  
+
   if (IsCandidateForConstraintValidation()) {
     if (IsValid()) {
       state |= NS_EVENT_STATE_VALID;