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

content/browser/media/capture/desktop_capture_device.cc

Index: content/browser/media/capture/desktop_capture_device.cc
diff --git a/content/browser/media/capture/desktop_capture_device.cc b/content/browser/media/capture/desktop_capture_device.cc
index 78a05f952ae53553a5fb423b13b21e1cd29b8550..655418b1506d002fcd7a30f070dccdfc879811fd 100644
--- a/content/browser/media/capture/desktop_capture_device.cc
+++ b/content/browser/media/capture/desktop_capture_device.cc
@@ -18,6 +18,7 @@
 #include "base/strings/string_number_conversions.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/thread.h"
+#include "base/threading/thread_restrictions.h"
 #include "base/timer/timer.h"
 #include "build/build_config.h"
 #include "content/browser/media/capture/desktop_capture_device_uma_types.h"
@@ -435,6 +436,7 @@ void DesktopCaptureDevice::AllocateAndStart(
 
 void DesktopCaptureDevice::StopAndDeAllocate() {
   if (core_) {
+    base::ThreadRestrictions::ScopedAllowIO allow_io;
     thread_.task_runner()->DeleteSoon(FROM_HERE, core_.release());
     thread_.Stop();
   }