flush after every print in windows

bench/SkBenchLogger.h

Index: bench/SkBenchLogger.h
diff --git a/bench/SkBenchLogger.h b/bench/SkBenchLogger.h
index 5eed9d373c3f2f3af9ba867754f7d7fb8da03444..21d64e4ea655e61774112b16afaee011e4e85e68 100644
--- a/bench/SkBenchLogger.h
+++ b/bench/SkBenchLogger.h
@@ -63,11 +63,10 @@ public:
 private:
 #ifdef SK_BUILD_FOR_ANDROID
     void nativeLogError(const char msg[]) { SkDebugf("%s", msg); }
-    void nativeLogProgress(const char msg[]) { SkDebugf("%s", msg); }
 #else
     void nativeLogError(const char msg[]) { fprintf(stderr, "%s", msg); }
-    void nativeLogProgress(const char msg[]) { printf("%s", msg); }
 #endif
+    void nativeLogProgress(const char msg[]) { SkDebugf("%s", msg); }
 
     void fileWrite(const char msg[], size_t size);