allocator: rename use_experimental_allocator_shim to use_allocator_shim

base/debug/thread_heap_usage_tracker_unittest.cc

Index: base/debug/thread_heap_usage_tracker_unittest.cc
diff --git a/base/debug/thread_heap_usage_tracker_unittest.cc b/base/debug/thread_heap_usage_tracker_unittest.cc
index 5a6a4fe715398491c99ee21a1c2cb540203239b3..56c66b2285c0d4d353f6eabe40124a789833c6b4 100644
--- a/base/debug/thread_heap_usage_tracker_unittest.cc
+++ b/base/debug/thread_heap_usage_tracker_unittest.cc
@@ -553,7 +553,7 @@ TEST_F(ThreadHeapUsageTrackerTest, AllShimFunctionsAreProvided) {
   MockFree(alloc);
 }
 
-#if BUILDFLAG(USE_EXPERIMENTAL_ALLOCATOR_SHIM)
+#if BUILDFLAG(USE_ALLOCATOR_SHIM)
 class ThreadHeapUsageShimTest : public testing::Test {
 #if defined(OS_MACOSX)
   void SetUp() override { allocator::InitializeAllocatorShim(); }
@@ -601,7 +601,7 @@ TEST_F(ThreadHeapUsageShimTest, HooksIntoMallocWhenShimAvailable) {
 
   ASSERT_FALSE(ThreadHeapUsageTracker::IsHeapTrackingEnabled());
 }
-#endif  // BUILDFLAG(USE_EXPERIMENTAL_ALLOCATOR_SHIM)
+#endif  // BUILDFLAG(USE_ALLOCATOR_SHIM)
 
 }  // namespace debug
 }  // namespace base