[tracing] Re-enable mmaps dump provider for memory-infra

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 cd1503b51952634ed8b19475c8176da4c151a3fc..4a464508fb43ba0b08c81c83e76177f697521e68 100644
--- a/base/trace_event/memory_dump_manager.cc
+++ b/base/trace_event/memory_dump_manager.cc
@@ -116,14 +116,7 @@ void MemoryDumpManager::Initialize() {
 #endif
 
 #if defined(OS_LINUX) || defined(OS_ANDROID)
-  // The memory maps dump provider is currently disabled for security reasons
-  // and will be enabled once tracing is more secure (crbug.com/517906).
-  // It is still enabled for running benchmarks.
-  if (CommandLine::ForCurrentProcess()->HasSwitch(
-          "enable-memory-benchmarking")) {
-    RegisterDumpProvider(ProcessMemoryMapsDumpProvider::GetInstance());
-  }
-
+  RegisterDumpProvider(ProcessMemoryMapsDumpProvider::GetInstance());
   RegisterDumpProvider(MallocDumpProvider::GetInstance());
   system_allocator_pool_name_ = MallocDumpProvider::kAllocatedObjects;
 #endif