Enable the memory task profiler in all builds where the heap shim is available.

base/BUILD.gn

Index: base/BUILD.gn
diff --git a/base/BUILD.gn b/base/BUILD.gn
index 11236dcd171b1a85d861094613942425e6432490..0a9cc776f398361ae2b141d300fc00edfc461d79 100644
--- a/base/BUILD.gn
+++ b/base/BUILD.gn
@@ -38,9 +38,9 @@ declare_args() {
   override_build_date = "N/A"
 
   # Turn on memory profiling in the task profiler when the heap shim is
-  # available, except for official builds for now.
-  enable_memory_task_profiler =
-      use_experimental_allocator_shim && (!is_official_build || is_syzyasan)
+  # available. Profiling can then be enabled at runtime by passing the command
+  # line flag --enable-heap-profiling=task-profiler.
+  enable_memory_task_profiler = use_experimental_allocator_shim
 
   # Partition alloc is included by default except iOS.
   use_partition_alloc = !is_ios