[wasm] Trace traps in the interpreter

R=clemensh@chromium.org

Change-Id: I4f1bda6f0ad420776eb181563d5efbc0d06a911e
Reviewed-on: https://chromium-review.googlesource.com/1141582Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54518}

src/wasm/wasm-interpreter.cc

@@ -1256,6 +1256,7 @@ class ThreadImpl {
   const WasmModule* module() const { return codemap_->module(); }
 
   void DoTrap(TrapReason trap, pc_t pc) {
+    TRACE("TRAP: %s\n", WasmOpcodes::TrapReasonMessage(trap));
     state_ = WasmInterpreter::TRAPPED;
     trap_reason_ = trap;
     CommitPc(pc);