[wasm] All strings are length-prefixed and inline

src/wasm/wasm-opcodes.h

Index: src/wasm/wasm-opcodes.h
diff --git a/src/wasm/wasm-opcodes.h b/src/wasm/wasm-opcodes.h
index fdca7370809034bb0467177d57a472442666bd02..dcc51440fed2f7d26a1a3b8f80e6b4e2cbe28696 100644
--- a/src/wasm/wasm-opcodes.h
+++ b/src/wasm/wasm-opcodes.h
@@ -68,6 +68,11 @@ struct MemoryAccess {
 typedef Signature<LocalType> FunctionSig;
 std::ostream& operator<<(std::ostream& os, const FunctionSig& function);
 
+struct WasmName {
+  const char* name;
+  uint32_t length;
+};
+
 // TODO(titzer): Renumber all the opcodes to fill in holes.
 
 // Control expressions and blocks.