Remove unused memory functions

base/allocator/allocator_extension_thunks.h

Index: base/allocator/allocator_extension_thunks.h
diff --git a/base/allocator/allocator_extension_thunks.h b/base/allocator/allocator_extension_thunks.h
index f1b4a93649d3a1c8f6349a710a00da24ae4bc552..d8873f6b2536b92692879e3bea1df0bd13400d79 100644
--- a/base/allocator/allocator_extension_thunks.h
+++ b/base/allocator/allocator_extension_thunks.h
@@ -15,11 +15,6 @@ namespace thunks {
 // new allocator extension from a specific allocator implementation to base.
 // See allocator_extension.h to see the interface that base exports.
 
-typedef bool (*GetAllocatorWasteSizeFunction)(size_t* size);
-void SetGetAllocatorWasteSizeFunction(
-    GetAllocatorWasteSizeFunction get_allocator_waste_size_function);
-GetAllocatorWasteSizeFunction GetGetAllocatorWasteSizeFunction();
-
 typedef void (*GetStatsFunction)(char* buffer, int buffer_length);
 void SetGetStatsFunction(GetStatsFunction get_stats_function);
 GetStatsFunction GetGetStatsFunction();