Bug 1557681. Rename nsPrintJob::Cancelled() to Cancel(). r=bobowen

"Cancelled" sounds like it's a query and should return a bool.  In fact this
method sets state in response to a nsIWebBrowserPrint.cancel() being called.

Differential Revision: https://phabricator.services.mozilla.com/D34137

--HG--
extra : rebase_source : 97797d906b84ed18a258881a31722179d50943f7
extra : amend_source : c0e1b61f13b2a8ccaec7cc995841948deabbe041

layout/base/nsDocumentViewer.cpp

@@ -3750,7 +3750,7 @@ nsDocumentViewer::GetCurrentPrintSettings(
 NS_IMETHODIMP
 nsDocumentViewer::Cancel() {
   NS_ENSURE_TRUE(mPrintJob, NS_ERROR_FAILURE);
-  return mPrintJob->Cancelled();
+  return mPrintJob->Cancel();
 }
 
 NS_IMETHODIMP

layout/printing/nsPrintJob.cpp

@@ -640,7 +640,7 @@ bool nsPrintJob::CheckBeforeDestroy() {
 }
 
 //-------------------------------------------------------
-nsresult nsPrintJob::Cancelled() {
+nsresult nsPrintJob::Cancel() {
   if (mPrt && mPrt->mPrintSettings) {
     return mPrt->mPrintSettings->SetIsCancelled(true);
   }

layout/printing/nsPrintJob.h

@@ -209,7 +209,7 @@ class nsPrintJob final : public nsIObserver,
                              eDocTitleDefault aDefType);
 
   bool CheckBeforeDestroy();
-  nsresult Cancelled();
+  nsresult Cancel();
 
   mozilla::PresShell* GetPrintPreviewPresShell() {
     return mPrtPreview->mPrintObject->mPresShell;