Remove usage of ScopedTaskScheduler.

content/browser/frame_host/render_widget_host_view_guest_unittest.cc

Index: content/browser/frame_host/render_widget_host_view_guest_unittest.cc
diff --git a/content/browser/frame_host/render_widget_host_view_guest_unittest.cc b/content/browser/frame_host/render_widget_host_view_guest_unittest.cc
index e2eff57dc9bb1a2b2924de1104dbe6d7cf47dd20..5145d04d09931e5febe098bddc38eda9ac5dae92 100644
--- a/content/browser/frame_host/render_widget_host_view_guest_unittest.cc
+++ b/content/browser/frame_host/render_widget_host_view_guest_unittest.cc
@@ -8,10 +8,10 @@
 #include <utility>
 
 #include "base/macros.h"
-#include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
-#include "base/test/scoped_task_scheduler.h"
+#include "base/test/scoped_task_environment.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "cc/surfaces/surface.h"
 #include "cc/surfaces/surface_manager.h"
@@ -49,7 +49,9 @@ class MockRenderWidgetHostDelegate : public RenderWidgetHostDelegate {
 
 class RenderWidgetHostViewGuestTest : public testing::Test {
  public:
-  RenderWidgetHostViewGuestTest() : task_scheduler_(&message_loop_) {}
+  RenderWidgetHostViewGuestTest()
+      : scoped_task_environment_(
+            base::test::ScopedTaskEnvironment::MainThreadType::UI) {}
 
   void SetUp() override {
 #if !defined(OS_ANDROID)
@@ -75,8 +77,8 @@ class RenderWidgetHostViewGuestTest : public testing::Test {
 
     browser_context_.reset();
 
-    message_loop_.task_runner()->DeleteSoon(FROM_HERE,
-                                            browser_context_.release());
+    base::ThreadTaskRunnerHandle::Get()->DeleteSoon(FROM_HERE,
+                                                    browser_context_.release());
     base::RunLoop().RunUntilIdle();
 #if !defined(OS_ANDROID)
     ImageTransportFactory::Terminate();
@@ -84,10 +86,8 @@ class RenderWidgetHostViewGuestTest : public testing::Test {
   }
 
  protected:
-  base::MessageLoopForUI message_loop_;
-
   // Needed by base::PostTaskWithTraits in RenderWidgetHostImpl constructor.
-  base::test::ScopedTaskScheduler task_scheduler_;
+  base::test::ScopedTaskEnvironment scoped_task_environment_;
 
   std::unique_ptr<BrowserContext> browser_context_;
   MockRenderWidgetHostDelegate delegate_;