Add experiments info to crash dumps.

chrome/common/metrics/experiments_helper.cc

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/common/metrics/experiments_helper.h"
+
+#include <vector>
+
+#include "base/metrics/field_trial.h"
+#include "base/string16.h"
+#include "base/stringprintf.h"
+#include "base/utf_string_conversions.h"
+#include "chrome/common/child_process_logging.h"
+
+namespace ExperimentsHelper {
+
+void SetChildProcessLoggingExperimentList() {
+  std::vector<base::FieldTrial::NameGroupId> name_group_ids;
+  base::FieldTrialList::GetFieldTrialNameGroupIds(&name_group_ids);
+  std::vector<string16> experiment_strings(name_group_ids.size());
+  for (size_t i = 0; i < name_group_ids.size(); ++i) {
+    // Wish there was a StringPrintf for string16... :-(
+    experiment_strings[i] = WideToUTF16(base::StringPrintf(
+        L"%x-%x", name_group_ids[i].name, name_group_ids[i].group));
+  }
+  child_process_logging::SetExperimentList(experiment_strings);
+}
+
+}  // namespace ExperimentsHelper