fiddle: Only output errors to stderr.

experimental/fiddle/fiddle_main.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include <stdio.h>
 
 #include <GL/osmesa.h>
@@ skipping 63 matching lines @@
 
 static GrContext* create_mesa_grcontext() {
     sk_sp<const GrGLInterface> mesa(GrGLCreateMesaInterface());
     intptr_t backend = reinterpret_cast<intptr_t>(mesa.get());
     return backend ? GrContext::Create(kOpenGL_GrBackend, backend) : nullptr;
 }
 
 
 int main() {
     const DrawOptions options = GetDrawOptions();
-    fprintf(stderr, "%s\n", options.source);
     if (options.source) {
         sk_sp<SkData> data(SkData::NewFromFileName(options.source));
         if (!data) {
             perror(options.source);
             return 1;
         } else {
             image = SkImage::NewFromEncoded(data.get());
             if (!image) {
                 perror("Unable to decode the source image.");
                 return 1;
@@ skipping 51 matching lines @@
     printf("{\n");
     dump_output(rasterData, "Raster", !gpuData && !pdfData && !skpData);
     dump_output(gpuData, "Gpu", !pdfData && !skpData);
     dump_output(pdfData, "Pdf", !skpData);
     dump_output(skpData, "Skp");
     printf("}\n");
 
     SkSafeSetNull(image);
     return 0;
 }