Allocator cleanup: allocator_extension call directly into tcmalloc

content/app/content_main_runner.cc

Index: content/app/content_main_runner.cc
diff --git a/content/app/content_main_runner.cc b/content/app/content_main_runner.cc
index 037c79bd512ed948ee71b560b89076cdbf2300fb..ae2de12a14bb7622b3ac9892a6477d1955f8283d 100644
--- a/content/app/content_main_runner.cc
+++ b/content/app/content_main_runner.cc
@@ -417,16 +417,6 @@ class ContentMainRunnerImpl : public ContentMainRunner {
       Shutdown();
   }
 
-#if defined(USE_TCMALLOC)
-  static bool GetNumericPropertyThunk(const char* name, size_t* value) {
-    return MallocExtension::instance()->GetNumericProperty(name, value);
-  }
-
-  static void ReleaseFreeMemoryThunk() {
-    MallocExtension::instance()->ReleaseFreeMemory();
-  }
-#endif
-
   int Initialize(const ContentMainParams& params) override {
     ui_task_ = params.ui_task;
 
@@ -455,10 +445,6 @@ class ContentMainRunnerImpl : public ContentMainRunner {
     // For tcmalloc, we need to tell it to behave like new.
     tc_set_new_mode(1);
 
-    // On windows, we've already set these thunks up in _heap_init()
-    base::allocator::SetGetNumericPropertyFunction(GetNumericPropertyThunk);
-    base::allocator::SetReleaseFreeMemoryFunction(ReleaseFreeMemoryThunk);
-
     // Provide optional hook for monitoring allocation quantities on a
     // per-thread basis.  Only set the hook if the environment indicates this
     // needs to be enabled.