Add configurable limit to allocations in heap profiler.

base/trace_event/memory_dump_manager.cc

Index: base/trace_event/memory_dump_manager.cc
diff --git a/base/trace_event/memory_dump_manager.cc b/base/trace_event/memory_dump_manager.cc
index 53532b231242ff567e07486f680c1819cf6bb092..1946431d7db44eaa07ba677ee1a49dcc111e98f2 100644
--- a/base/trace_event/memory_dump_manager.cc
+++ b/base/trace_event/memory_dump_manager.cc
@@ -654,15 +654,16 @@ void MemoryDumpManager::OnTraceLogEnabled() {
   g_periodic_dumps_count = 0;
   const TraceConfig trace_config =
       TraceLog::GetInstance()->GetCurrentTraceConfig();
-  const TraceConfig::MemoryDumpConfig& config_list =
-      trace_config.memory_dump_config();
-  if (config_list.empty())
+  session_state_->SetMemoryDumpConfig(trace_config.memory_dump_config());
+  std::vector<TraceConfig::MemoryDumpTriggerConfig> triggers_list =

[Primiano Tucci (use gerrit), 2016/04/22 14:18:29]

can this still be a const& reference instead of copying the vector?
I mean const std::vector....& triggers_list

[Maria, 2016/04/25 18:37:23]

Done.

+      trace_config.memory_dump_config().triggers;
+  if (triggers_list.empty())
     return;
 
   uint32_t min_timer_period_ms = std::numeric_limits<uint32_t>::max();
   uint32_t heavy_dump_period_ms = 0;
-  DCHECK_LE(config_list.size(), 2u);
-  for (const TraceConfig::MemoryDumpTriggerConfig& config : config_list) {
+  DCHECK_LE(triggers_list.size(), 2u);
+  for (const TraceConfig::MemoryDumpTriggerConfig& config : triggers_list) {
     DCHECK(config.periodic_interval_ms);
     if (config.level_of_detail == MemoryDumpLevelOfDetail::DETAILED)
       heavy_dump_period_ms = config.periodic_interval_ms;