[tracing] Send smaps file desciptor to child process for tracing

base/trace_event/trace_config.cc

 // Copyright (c) 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/trace_config.h"
 
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/strings/pattern.h"
 #include "base/strings/string_split.h"
@@ skipping 234 matching lines @@
   enable_sampling_ = false;
   enable_systrace_ = false;
   enable_argument_filter_ = false;
   included_categories_.clear();
   disabled_categories_.clear();
   excluded_categories_.clear();
   synthetic_delays_.clear();
   memory_dump_config_.clear();
 }
 
+bool TraceConfig::IsDetailedMemoryDumpEnabled() const {
+  if (IsCategoryEnabled(MemoryDumpManager::kTraceCategory)) {
+    for (const MemoryDumpTriggerConfig& config : memory_dump_config_) {
+      if (config.level_of_detail == MemoryDumpLevelOfDetail::DETAILED)
+        return true;
+    }
+  }
+  return false;
+}
+
 void TraceConfig::InitializeDefault() {
   record_mode_ = RECORD_UNTIL_FULL;
   enable_sampling_ = false;
   enable_systrace_ = false;
   enable_argument_filter_ = false;
   excluded_categories_.push_back("*Debug");
   excluded_categories_.push_back("*Test");
 }
 
 void TraceConfig::InitializeFromConfigString(const std::string& config_string) {
@@ skipping 368 matching lines @@
           str.at(0) == ' ' ||
           str.at(str.length() - 1) == ' ';
 }
 
 bool TraceConfig::HasIncludedPatterns() const {
   return !included_categories_.empty();
 }
 
 }  // namespace trace_event
 }  // namespace base