No need to use threadsafe refcounting for rendering contexts, bug 110933. r+sr=dbaron.

gfx/src/beos/nsRenderingContextBeOS.cpp

@@ -48,7 +48,7 @@
 #include <math.h>
 
 
-NS_IMPL_THREADSAFE_ISUPPORTS1(nsRenderingContextBeOS, nsIRenderingContext)
+NS_IMPL_ISUPPORTS1(nsRenderingContextBeOS, nsIRenderingContext)
 
 static NS_DEFINE_CID(kRegionCID, NS_REGION_CID);
 

gfx/src/gtk/nsRenderingContextGTK.cpp

@@ -58,7 +58,7 @@
 #include <gdk/gdkwindow.h>
 #endif
 
-NS_IMPL_THREADSAFE_ISUPPORTS1(nsRenderingContextGTK, nsIRenderingContext)
+NS_IMPL_ISUPPORTS1(nsRenderingContextGTK, nsIRenderingContext)
 
 static NS_DEFINE_CID(kRegionCID, NS_REGION_CID);
 

gfx/src/ps/nsRenderingContextPS.cpp

@@ -131,7 +131,7 @@ PS_State :: ~PS_State()
 }
 
 
-NS_IMPL_THREADSAFE_ISUPPORTS1(nsRenderingContextPS, nsIRenderingContext)
+NS_IMPL_ISUPPORTS1(nsRenderingContextPS, nsIRenderingContext)
 
 /** ---------------------------------------------------
  *  See documentation in nsIRenderingContext.h

gfx/src/xlib/nsRenderingContextXlib.cpp

@@ -58,7 +58,7 @@
 
 #define NS_TO_XLIBRGB_RGB(ns) (ns & 0xff) << 16 | (ns & 0xff00) | ((ns >> 16) & 0xff)
 
-NS_IMPL_THREADSAFE_ISUPPORTS1(nsRenderingContextXlib, nsIRenderingContext)
+NS_IMPL_ISUPPORTS1(nsRenderingContextXlib, nsIRenderingContext)
 
 #ifdef PR_LOGGING 
 static PRLogModuleInfo * RenderingContextXlibLM = PR_NewLogModule("RenderingContextXlib");