Change memory dumps to not use periodic dumps by default.

base/trace_event/trace_config.cc

Index: base/trace_event/trace_config.cc
diff --git a/base/trace_event/trace_config.cc b/base/trace_event/trace_config.cc
index b6fefa96aafd33dab84d41d09e876bd8afba485a..e2e7b8f39fc6bfe6b2987899380625695617f3de 100644
--- a/base/trace_event/trace_config.cc
+++ b/base/trace_event/trace_config.cc
@@ -51,11 +51,6 @@ const char kEventFiltersParam[] = "event_filters";
 const char kFilterPredicateParam[] = "filter_predicate";
 const char kFilterArgsParam[] = "filter_args";
 
-// Default configuration of memory dumps.
-const TraceConfig::MemoryDumpConfig::Trigger kDefaultMemoryDumpTrigger = {
-    5000,  // min_time_between_dumps_ms
-    MemoryDumpLevelOfDetail::DETAILED, MemoryDumpType::PERIODIC_INTERVAL};
-
 class ConvertableTraceConfigToTraceFormat
     : public base::trace_event::ConvertableToTraceFormat {
  public:
@@ -459,7 +454,6 @@ void TraceConfig::SetMemoryDumpConfigFromConfigDict(
 
 void TraceConfig::SetDefaultMemoryDumpConfig() {
   memory_dump_config_.Clear();
-  memory_dump_config_.triggers.push_back(kDefaultMemoryDumpTrigger);
   memory_dump_config_.allowed_dump_modes = GetDefaultAllowedMemoryDumpModes();
 }