mac: Periodically shim new malloc zones immediately after startup.

content/browser/browser_main_loop.cc

Index: content/browser/browser_main_loop.cc
diff --git a/content/browser/browser_main_loop.cc b/content/browser/browser_main_loop.cc
index a4e0e2b16baa492af82bd93992391816291a429f..d9b9fbdd922b4258b4f80dca8dc1b7680e4f9f04 100644
--- a/content/browser/browser_main_loop.cc
+++ b/content/browser/browser_main_loop.cc
@@ -134,6 +134,7 @@
 #endif
 
 #if defined(OS_MACOSX)
+#include "base/allocator/allocator_interception_mac.h"
 #include "base/memory/memory_pressure_monitor_mac.h"
 #include "content/browser/bootstrap_sandbox_manager_mac.h"
 #include "content/browser/cocoa/system_hotkey_helper_mac.h"
@@ -870,6 +871,10 @@ int BrowserMainLoop::PreCreateThreads() {
   if (base::FeatureList::IsEnabled(features::kMemoryCoordinator))
     MemoryCoordinatorImpl::GetInstance()->Start();
 
+#if defined(OS_MACOSX)
+  base::allocator::PeriodicallyShimNewMallocZones();
+#endif
+
 #if BUILDFLAG(ENABLE_PLUGINS)
   // Prior to any processing happening on the IO thread, we create the
   // plugin service as it is predominantly used from the IO thread,