allocator: rename use_experimental_allocator_shim to use_allocator_shim

base/process/memory_linux.cc

Index: base/process/memory_linux.cc
diff --git a/base/process/memory_linux.cc b/base/process/memory_linux.cc
index 985bc54eb64439c68878671134d014e26c1a8cfd..b6a513b8a0cf72b672029700b2a3c730db7b5578 100644
--- a/base/process/memory_linux.cc
+++ b/base/process/memory_linux.cc
@@ -46,7 +46,7 @@ void OnNoMemory() {
 // logic is implemented in the shim.
 #if !defined(ADDRESS_SANITIZER) && !defined(MEMORY_SANITIZER) && \
     !defined(THREAD_SANITIZER) && !defined(LEAK_SANITIZER) &&    \
-    !BUILDFLAG(USE_EXPERIMENTAL_ALLOCATOR_SHIM)
+    !BUILDFLAG(USE_ALLOCATOR_SHIM)
 
 #if defined(LIBC_GLIBC) && !defined(USE_TCMALLOC)
 
@@ -150,7 +150,7 @@ void EnableTerminationOnOutOfMemory() {
   // If we're using glibc's allocator, the above functions will override
   // malloc and friends and make them die on out of memory.
 
-#if BUILDFLAG(USE_EXPERIMENTAL_ALLOCATOR_SHIM)
+#if BUILDFLAG(USE_ALLOCATOR_SHIM)
   allocator::SetCallNewHandlerOnMallocFailure(true);
 #elif defined(USE_TCMALLOC)
   // For tcmalloc, we need to tell it to behave like new.
@@ -196,7 +196,7 @@ bool AdjustOOMScore(ProcessId process, int score) {
 }
 
 bool UncheckedMalloc(size_t size, void** result) {
-#if BUILDFLAG(USE_EXPERIMENTAL_ALLOCATOR_SHIM)
+#if BUILDFLAG(USE_ALLOCATOR_SHIM)
   *result = allocator::UncheckedAlloc(size);
 #elif defined(MEMORY_TOOL_REPLACES_ALLOCATOR) || \
     (!defined(LIBC_GLIBC) && !defined(USE_TCMALLOC))