Add support for dump allocations created in a certain time window

third_party/tcmalloc/chromium/src/heap-profiler.cc

Index: third_party/tcmalloc/chromium/src/heap-profiler.cc
diff --git a/third_party/tcmalloc/chromium/src/heap-profiler.cc b/third_party/tcmalloc/chromium/src/heap-profiler.cc
index 73f31f743f6146a6108b75c2ef0b2f8a821e4e4e..1c5fcf088e297739303d400da5f3d198bff7087b 100644
--- a/third_party/tcmalloc/chromium/src/heap-profiler.cc
+++ b/third_party/tcmalloc/chromium/src/heap-profiler.cc
@@ -601,6 +601,30 @@ extern "C" void HeapProfilerDump(const char* reason) {
   }
 }
 
+extern "C" void HeapProfilerMarkBaseline() {
+  SpinLockHolder l(&heap_lock);
+
+  if (!is_on) return;
+
+  heap_profile->MarkCurrentAllocations(HeapProfileTable::MARK_ONE);
+}
+
+extern "C" void HeapProfilerMarkInteresting() {
+  SpinLockHolder l(&heap_lock);
+
+  if (!is_on) return;
+
+  heap_profile->MarkUnmarkedAllocations(HeapProfileTable::MARK_TWO);
+}
+
+extern "C" void HeapProfilerDumpAliveObjects(const char* filename) {
+  SpinLockHolder l(&heap_lock);
+
+  if (!is_on) return;
+
+  heap_profile->DumpMarkedObjects(HeapProfileTable::MARK_TWO, filename);
+}
+
 //----------------------------------------------------------------------
 // Initialization/finalization code
 //----------------------------------------------------------------------