[inspector] Add extra debug code to investigate crbug/897816

BUG=chromium:897816

Change-Id: Ie28efcab73ccbcb6d8b1a7508b99aec59f3a3ae3
Reviewed-on: https://chromium-review.googlesource.com/c/1384795Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Commit-Queue: Alexei Filippov <alph@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58383}

src/inspector/v8-runtime-agent-impl.cc

@@ -238,6 +238,13 @@ void V8RuntimeAgentImpl::evaluate(
   TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"),
                "EvaluateScript");
   int contextId = 0;
+
+  // TODO(alph): Temporary code to investigate the crash crbug.com/897816
+  char expression_for_debug[200];
+  std::snprintf(expression_for_debug, sizeof(expression_for_debug),
+                "V8RAI::evaluate %s", expression.utf8().c_str());
+  USE(expression_for_debug);
+
   Response response = ensureContext(m_inspector, m_session->contextGroupId(),
                                     std::move(executionContextId), &contextId);
   if (!response.isSuccess()) {