[tracing] Non-functional refactor of memory dump arg names

base/trace_event/memory_dump_request_args.cc

 // Copyright 2015 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 "base/trace_event/memory_dump_request_args.h"
 
 #include "base/logging.h"
 
 namespace base {
 namespace trace_event {
 
 // static
-const char* MemoryDumpTypeToString(
-    const MemoryDumpType& dump_type) {
+const char* MemoryDumpTypeToString(const MemoryDumpType& dump_type) {
   switch (dump_type) {
     case MemoryDumpType::TASK_BEGIN:
-      return "TASK_BEGIN";
+      return "task_begin";
     case MemoryDumpType::TASK_END:
-      return "TASK_END";
+      return "task_end";
     case MemoryDumpType::PERIODIC_INTERVAL:
-      return "PERIODIC_INTERVAL";
+      return "periodic_interval";
     case MemoryDumpType::EXPLICITLY_TRIGGERED:
-      return "EXPLICITLY_TRIGGERED";
+      return "explicitly_triggered";
   }
   NOTREACHED();
-  return "UNKNOWN";
+  return "unknown";
+}
+
+const char* MemoryDumpLevelOfDetailToString(
+    const MemoryDumpLevelOfDetail& level_of_detail) {
+  switch (level_of_detail) {
+    case MemoryDumpLevelOfDetail::LIGHT:
+      return "light";
+    case MemoryDumpLevelOfDetail::DETAILED:
+      return "detailed";
+  }
+  NOTREACHED();
+  return "unknown";
+}
+
+MemoryDumpLevelOfDetail StringToMemoryDumpLevelOfDetail(
+    const std::string& str) {
+  if (str == "light")
+    return MemoryDumpLevelOfDetail::LIGHT;
+  if (str == "detailed")
+    return MemoryDumpLevelOfDetail::DETAILED;
+  NOTREACHED();
+  return MemoryDumpLevelOfDetail::LAST;
 }
 
 }  // namespace trace_event
 }  // namespace base