Revert of [tracing] Dump child processes' memory metrics in browser

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 bc3fbdfc96c64b2931892d95f2fb5eba8f5f0147..aa81e00a5da3c803fe24087fcde2ecf96186407f 100644
--- a/base/trace_event/memory_dump_manager.cc
+++ b/base/trace_event/memory_dump_manager.cc
@@ -23,6 +23,14 @@
 #include "base/trace_event/trace_event_argument.h"
 #include "build/build_config.h"
 
+#if !defined(OS_NACL)
+#include "base/trace_event/process_memory_totals_dump_provider.h"
+#endif
+
+#if defined(OS_LINUX) || defined(OS_ANDROID)
+#include "base/trace_event/process_memory_maps_dump_provider.h"
+#endif
+
 #if defined(OS_ANDROID)
 #include "base/trace_event/java_heap_dump_provider_android.h"
 #endif
@@ -145,8 +153,18 @@
   }
 
 // Enable the core dump providers.
+#if !defined(OS_NACL)
+  RegisterDumpProvider(ProcessMemoryTotalsDumpProvider::GetInstance(),
+                       "ProcessMemoryTotals", nullptr);
+#endif
+
 #if defined(MALLOC_MEMORY_TRACING_SUPPORTED)
   RegisterDumpProvider(MallocDumpProvider::GetInstance(), "Malloc", nullptr);
+#endif
+
+#if defined(OS_LINUX) || defined(OS_ANDROID)
+  RegisterDumpProvider(ProcessMemoryMapsDumpProvider::GetInstance(),
+                       "ProcessMemoryMaps", nullptr);
 #endif
 
 #if defined(OS_ANDROID)