[tracing] Fix resident size of malloc dump provider when tcmalloc is used

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 baa54e94a43dfa317305f38a414f6ee7bb2a180d..a21f370fb7056e7b41f154e4cb24ef48cf6feeb9 100644
--- a/content/app/content_main_runner.cc
+++ b/content/app/content_main_runner.cc
@@ -433,6 +433,10 @@ class ContentMainRunnerImpl : public ContentMainRunner {
     MallocExtension::instance()->GetStats(buffer, buffer_length);
   }
 
+  static bool GetNumericPropertyThunk(const char* name, size_t* value) {
+    return MallocExtension::instance()->GetNumericProperty(name, value);
+  }
+
   static void ReleaseFreeMemoryThunk() {
     MallocExtension::instance()->ReleaseFreeMemory();
   }
@@ -470,6 +474,7 @@ class ContentMainRunnerImpl : public ContentMainRunner {
     base::allocator::SetGetAllocatorWasteSizeFunction(
         GetAllocatorWasteSizeThunk);
     base::allocator::SetGetStatsFunction(GetStatsThunk);
+    base::allocator::SetGetNumericPropertyFunction(GetNumericPropertyThunk);
     base::allocator::SetReleaseFreeMemoryFunction(ReleaseFreeMemoryThunk);
 
     // Provide optional hook for monitoring allocation quantities on a