VisualBenchTest: Write JSON output

bench/ResultsWriter.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  *
  * Classes for writing out bench results in various formats.
  */
 
 #ifndef SkResultsWriter_DEFINED
 #define SkResultsWriter_DEFINED
 
 #include "BenchLogger.h"
 #include "SkJSONCPP.h"
+#include "SkOSFile.h"
 #include "SkStream.h"
 #include "SkString.h"
 #include "SkTArray.h"
 #include "SkTypes.h"
 
 /**
  * Base class for writing out the bench results.
  *
  * Default implementation does nothing.
  */
@@ skipping 84 matching lines @@
         // Don't record if nan, or -nan.
         if (sk_double_isnan(ms)) {
             return;
         }
         SkASSERT(fConfig);
         (*fConfig)[name] = ms;
     }
 
     // Flush to storage now please.
     virtual void flush() {
+        SkString dirname = SkOSPath::Dirname(fFilename.c_str());
+        if (!sk_exists(dirname.c_str(), kWrite_SkFILE_Flag)) {
+            if (!sk_mkdir(dirname.c_str())) {
+                SkDebugf("Failed to create directory.");
+            }
+        }
         SkFILEWStream stream(fFilename.c_str());
         stream.writeText(Json::StyledWriter().write(fRoot).c_str());
         stream.flush();
     }
 
 private:
     SkString fFilename;
     Json::Value fRoot;
     Json::Value& fResults;
     Json::Value* fBench;
     Json::Value* fConfig;
 };
 
 
 #endif