Don't emit CRLF when generating code on Windows (from SkSL)

Bug: skia:
Change-Id: I3f3c5f9df43e48f975b09f0bafadf03a15afec51
Reviewed-on: https://skia-review.googlesource.com/34745
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>

src/sksl/SkSLFileOutputStream.h

@@ -17,7 +17,7 @@ namespace SkSL {
 class FileOutputStream : public OutputStream {
 public:
     FileOutputStream(const char* name) {
-        fFile = fopen(name, "w");
+        fFile = fopen(name, "wb");
     }
 
     ~FileOutputStream() override {