allocator: rename use_experimental_allocator_shim to use_allocator_shim

base/allocator/allocator_shim_unittest.cc

Index: base/allocator/allocator_shim_unittest.cc
diff --git a/base/allocator/allocator_shim_unittest.cc b/base/allocator/allocator_shim_unittest.cc
index 70a6c979c90d2ab2789e864bec09b2f6d797cf3a..6f5f7f6e4d7ad557a88506f65c721caa8ea2ee87 100644
--- a/base/allocator/allocator_shim_unittest.cc
+++ b/base/allocator/allocator_shim_unittest.cc
@@ -455,11 +455,11 @@ TEST_F(AllocatorShimTest, NewHandlerConcurrency) {
   ASSERT_EQ(kNumThreads, GetNumberOfNewHandlerCalls());
 }
 
-#if defined(OS_WIN) && BUILDFLAG(USE_EXPERIMENTAL_ALLOCATOR_SHIM)
+#if defined(OS_WIN) && BUILDFLAG(USE_ALLOCATOR_SHIM)
 TEST_F(AllocatorShimTest, ShimReplacesCRTHeapWhenEnabled) {
   ASSERT_NE(::GetProcessHeap(), reinterpret_cast<HANDLE>(_get_heap_handle()));
 }
-#endif  // defined(OS_WIN) && BUILDFLAG(USE_EXPERIMENTAL_ALLOCATOR_SHIM)
+#endif  // defined(OS_WIN) && BUILDFLAG(USE_ALLOCATOR_SHIM)
 
 }  // namespace
 }  // namespace allocator