Revert of [wasm] Increase WebAssembly.Memory maximum size to ~2GB

src/wasm/wasm-limits.h

Index: src/wasm/wasm-limits.h
diff --git a/src/wasm/wasm-limits.h b/src/wasm/wasm-limits.h
index 5d62500b4135a7568698aa2524a26f4a26f9d758..c2ecf616573519f6004888f4f5c86a965dc5d2bf 100644
--- a/src/wasm/wasm-limits.h
+++ b/src/wasm/wasm-limits.h
@@ -22,9 +22,7 @@
 constexpr size_t kV8MaxWasmGlobals = 1000000;
 constexpr size_t kV8MaxWasmDataSegments = 100000;
 // Don't use this limit directly, but use the value of FLAG_wasm_max_mem_pages.
-// Current limit mimics the maximum allowed allocation on an ArrayBuffer
-// (2GiB - 1 page).
-constexpr size_t kV8MaxWasmMemoryPages = 32767;  // ~ 2 GiB
+constexpr size_t kV8MaxWasmMemoryPages = 16384;  // = 1 GiB
 constexpr size_t kV8MaxWasmStringSize = 100000;
 constexpr size_t kV8MaxWasmModuleSize = 1024 * 1024 * 1024;  // = 1 GiB
 constexpr size_t kV8MaxWasmFunctionSize = 128 * 1024;