fix crash when passing empty string to recording (#17711)

atom/browser/api/atom_api_content_tracing.cc

@@ -11,6 +11,7 @@
 #include "atom/common/promise_util.h"
 #include "base/bind.h"
 #include "base/files/file_util.h"
+#include "base/threading/thread_restrictions.h"
 #include "content/public/browser/tracing_controller.h"
 #include "native_mate/dictionary.h"
 
@@ -59,6 +60,11 @@ scoped_refptr<TracingController::TraceDataEndpoint> GetTraceDataEndpoint(
     const base::FilePath& path,
     const CompletionCallback& callback) {
   base::FilePath result_file_path = path;
+
+  // base::CreateTemporaryFile prevents blocking so we need to allow it
+  // for now since offloading this to a different sequence would require
+  // changing the api shape
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   if (result_file_path.empty() && !base::CreateTemporaryFile(&result_file_path))
     LOG(ERROR) << "Creating temporary file failed";
 

spec/api-content-tracing-spec.js

@@ -214,8 +214,7 @@ describe('contentTracing', () => {
       expect(resultFilePath).to.be.a('string').and.be.equal(outputFilePath)
     })
 
-    // FIXME(alexeykuzmin): https://github.com/electron/electron/issues/16019
-    xit('creates a temporary file when an empty string is passed', async function () {
+    it('creates a temporary file when an empty string is passed', async function () {
       const resultFilePath = await record(/* options */ {}, /* outputFilePath */ '')
       expect(resultFilePath).to.be.a('string').that.is.not.empty()
     })