TCMalloc: restrict maximum size of memory ranges

third_party/tcmalloc/chromium/src/common.h

Index: third_party/tcmalloc/chromium/src/common.h
diff --git a/third_party/tcmalloc/chromium/src/common.h b/third_party/tcmalloc/chromium/src/common.h
index c8ceb61ca6ea64fd02e8236840cf91ca42a6844f..6e3d6957ae136d39492700683c27988ac12bbbab 100644
--- a/third_party/tcmalloc/chromium/src/common.h
+++ b/third_party/tcmalloc/chromium/src/common.h
@@ -144,6 +144,10 @@ inline Length pages(size_t bytes) {
       ((bytes & (kPageSize - 1)) > 0 ? 1 : 0);
 }
 
+// For security reasons, we want to limit the size of contiguous allocations.
+// See crbug.com/169327.
+bool IsContiguousAllocSizePermitted(size_t alloc_size);
+
 // For larger allocation sizes, we use larger memory alignments to
 // reduce the number of size classes.
 int AlignmentForSize(size_t size);