Fix integration tests in src/chrome and src/extensions so that we can turn on IO thread checks wi...

chrome/browser/browsing_data/browsing_data_remover_browsertest.cc

Index: chrome/browser/browsing_data/browsing_data_remover_browsertest.cc
diff --git a/chrome/browser/browsing_data/browsing_data_remover_browsertest.cc b/chrome/browser/browsing_data/browsing_data_remover_browsertest.cc
index d2bce3701fa5321df035645f8aa0a3f45b7c63b9..97bfe6f06af7ddfee279182cf0a4f26ce9d80613 100644
--- a/chrome/browser/browsing_data/browsing_data_remover_browsertest.cc
+++ b/chrome/browser/browsing_data/browsing_data_remover_browsertest.cc
@@ -10,6 +10,7 @@
 #include "base/files/file_path.h"
 #include "base/path_service.h"
 #include "base/run_loop.h"
+#include "base/threading/thread_restrictions.h"
 #include "chrome/browser/browsing_data/browsing_data_helper.h"
 #include "chrome/browser/browsing_data/browsing_data_remover.h"
 #include "chrome/browser/browsing_data/browsing_data_remover_factory.h"
@@ -77,6 +78,7 @@ class BrowsingDataRemoverBrowserTest : public InProcessBrowserTest {
   }
 
   void DownloadAnItem() {
+    base::ThreadRestrictions::ScopedAllowIO allow_io;
     base::ScopedTempDir downloads_directory;
     ASSERT_TRUE(downloads_directory.CreateUniqueTempDir());
     browser()->profile()->GetPrefs()->SetFilePath(