diff --git a/third_party/skia/src/shaders/SkShaderBase.cpp b/third_party/skia/src/shaders/SkShaderBase.cpp
index 5d20ba49ea1..dcbf19238c1 100644
--- a/third_party/skia/src/shaders/SkShaderBase.cpp
+++ b/third_party/skia/src/shaders/SkShaderBase.cpp
@@ -29,7 +29,12 @@ uint32_t next_unique_id() {
     static std::atomic<uint32_t> gNextUniqueID{SK_InvalidUniqueID + 1};
     uint32_t id = SK_InvalidUniqueID;
     do {
-        id = gNextUniqueID.fetch_add(1, std::memory_order_relaxed);
+        // POC TIME-COMPRESSION: mask to 8 bits so the 32-bit counter wrap (which a
+        // compromised renderer can drive in ~hours by streaming ~2^32 PaintOp gradient
+        // shaders to the GPU process) is reproducible in seconds. The vulnerable
+        // de-duplication logic in FloatStorageManager::allocateGradientData() is
+        // unchanged; only the time-to-wrap is reduced.
+        id = gNextUniqueID.fetch_add(1, std::memory_order_relaxed) & 0xFFu;
     } while (id == SK_InvalidUniqueID);
     return id;
 }