Since I changed prefapi.h to use prtypes instead of the obsolete XP_ things, I have to change calls to match. In this case, a macro had been used that was in one of the obsolete files 'PRIVATE'. Replaced this by its value 'static'

layout/generic/nsFrameFrame.cpp

@@ -617,7 +617,7 @@ nsHTMLFrameInnerFrame::GetParentContent(nsIContent*& aContent)
 }
 
 
-PRIVATE
+static
 void TempMakeAbsURL(nsIContent* aContent, nsString& aRelURL, nsString& aAbsURL)
 {
   nsIURL* baseURL = nsnull;

layout/html/document/src/nsFrameFrame.cpp

@@ -617,7 +617,7 @@ nsHTMLFrameInnerFrame::GetParentContent(nsIContent*& aContent)
 }
 
 
-PRIVATE
+static
 void TempMakeAbsURL(nsIContent* aContent, nsString& aRelURL, nsString& aAbsURL)
 {
   nsIURL* baseURL = nsnull;