Reland https://codereview.chromium.org/286903025

bench/ResultsWriter.cpp

+/*
+ * Copyright 2014 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ * Helper functions for result writing operations.
+ */
+
+#include "ResultsWriter.h"
+
+#ifdef SK_BUILD_JSON_WRITER
+
+Json::Value* SkFindNamedNode(Json::Value* root, const char name[]) {
+    Json::Value* search_results = NULL;
+    for(Json::Value::iterator iter = root->begin();
+            iter!= root->end(); ++iter) {
+        if(SkString(name).equals((*iter)["name"].asCString())) {
+            search_results = &(*iter);
+            break;
+        }
+    }
+
+    if(search_results != NULL) {
+        return search_results;
+    } else {
+        Json::Value* new_val = &(root->append(Json::Value()));
+        (*new_val)["name"] = name;
+        return new_val;
+    }
+}
+
+#endif // SK_BUILD_JSON_WRITER