https://bugzilla.mozilla.org/show_bug.cgi?id=435313

Index: mozilla/gfx/thebes/public/gfxPDFSurface.h
===================================================================
RCS file: /cvsroot/mozilla/gfx/thebes/public/gfxPDFSurface.h,v
retrieving revision 1.13
diff -d -u -p -r1.13 gfxPDFSurface.h
--- gfx/thebes/public/gfxPDFSurface.h	19 Mar 2008 20:51:42 -0000	1.13
+++ gfx/thebes/public/gfxPDFSurface.h	23 May 2008 00:50:31 -0000
@@ -63,7 +63,11 @@ public:
     // this is in points!
     const gfxSize& GetSize() const { return mSize; }
 
-    virtual PRInt32 GetDefaultContextFlags() const { return gfxContext::FLAG_DISABLE_SNAPPING; }
+    virtual PRInt32 GetDefaultContextFlags() const
+    {
+        return gfxContext::FLAG_SIMPLIFY_OPERATORS |
+               gfxContext::FLAG_DISABLE_SNAPPING;
+    }
 
 private:
     nsCOMPtr<nsIOutputStream> mStream;
Index: mozilla/gfx/thebes/public/gfxPSSurface.h
===================================================================
RCS file: /cvsroot/mozilla/gfx/thebes/public/gfxPSSurface.h,v
retrieving revision 1.13
diff -d -u -p -r1.13 gfxPSSurface.h
--- gfx/thebes/public/gfxPSSurface.h	19 Mar 2008 20:51:42 -0000	1.13
+++ gfx/thebes/public/gfxPSSurface.h	23 May 2008 00:50:31 -0000
@@ -63,7 +63,11 @@ public:
     // this is in points!
     const gfxSize& GetSize() const { return mSize; }
 
-    virtual PRInt32 GetDefaultContextFlags() const { return gfxContext::FLAG_DISABLE_SNAPPING; }
+    virtual PRInt32 GetDefaultContextFlags() const
+    {
+        return gfxContext::FLAG_SIMPLIFY_OPERATORS |
+               gfxContext::FLAG_DISABLE_SNAPPING;
+    }
 
 private:
     nsCOMPtr<nsIOutputStream> mStream;