Allocator cleanup: allocator_extension call directly into tcmalloc

base/debug/profiler.cc

Index: base/debug/profiler.cc
diff --git a/base/debug/profiler.cc b/base/debug/profiler.cc
index 75e9aac0cba57e4784d21647faf1a2ee8372ae81..a205d1f82defab85666c915ef6309fac0479e109 100644
--- a/base/debug/profiler.cc
+++ b/base/debug/profiler.cc
@@ -56,6 +56,10 @@ void RestartProfilingAfterFork() {
   ProfilerRegisterThread();
 }
 
+bool IsProfilingSupported() {
+  return true;
+}
+
 #else
 
 void StartProfiling(const std::string& name) {
@@ -74,6 +78,10 @@ bool BeingProfiled() {
 void RestartProfilingAfterFork() {
 }
 
+bool IsProfilingSupported() {
+  return false;
+}
+
 #endif
 
 #if !defined(OS_WIN)