Support use of third party time function to profiler

third_party/tcmalloc/chromium/src/thread_cache.cc

Index: third_party/tcmalloc/chromium/src/thread_cache.cc
===================================================================
--- third_party/tcmalloc/chromium/src/thread_cache.cc	(revision 121705)
+++ third_party/tcmalloc/chromium/src/thread_cache.cc	(working copy)
@@ -103,6 +103,7 @@
 
 void ThreadCache::Init(pthread_t tid) {
   size_ = 0;
+  total_bytes_allocated_ = 0;
 
   max_size_ = 0;
   IncreaseCacheLimitLocked();
@@ -303,6 +304,11 @@
   return sampler_.GetSamplePeriod();
 }
 
+// static
+unsigned int ThreadCache::GetBytesAllocatedOnCurrentThread() {
+  return ThreadCache::GetThreadHeap()->GetTotalBytesAllocated();
+}
+
 void ThreadCache::InitModule() {
   SpinLockHolder h(Static::pageheap_lock());
   if (!phinited) {