Backport some tests in /content/browser/renderer_host/input to SingleThreadTaskEnvironment

These tests were previously migrated from single-threaded MessageLoop to
a multi-threaded TaskEnvironment (then named ScopedTaskEnvironment) as
part of crbug.com/891670.

//base OWNERS decided in retrospect that it was better to keep a
single-threaded option for TaskEnvironment and introduced
SingleThreadTaskEnvironment. This CL retrofits that decision for
/content/browser/renderer_host/input.

This CL is a no-op if it passes CQ.

This CL was uploaded by git cl split.

R=tdresser@chromium.org

Bug: 891670
Change-Id: I178884fcf70f05b71f828abb8c5648fb187d99ca
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1786781
Auto-Submit: Gabriel Charette <gab@chromium.org>
Reviewed-by: Timothy Dresser <tdresser@chromium.org>
Commit-Queue: Timothy Dresser <tdresser@chromium.org>
Cr-Commit-Position: refs/heads/master@{#693933}

content/browser/renderer_host/input/gesture_event_queue_unittest.cc

@@ -39,7 +39,8 @@ class GestureEventQueueTest : public testing::Test,
                               public FlingControllerSchedulerClient {
  public:
   GestureEventQueueTest()
-      : task_environment_(base::test::TaskEnvironment::MainThreadType::UI),
+      : task_environment_(
+            base::test::SingleThreadTaskEnvironment::MainThreadType::UI),
         acked_gesture_event_count_(0),
         sent_gesture_event_count_(0) {}
 
@@ -220,7 +221,7 @@ class GestureEventQueueTest : public testing::Test,
   }
 
  private:
-  base::test::TaskEnvironment task_environment_;
+  base::test::SingleThreadTaskEnvironment task_environment_;
   std::unique_ptr<GestureEventQueue> queue_;
   size_t acked_gesture_event_count_;
   size_t sent_gesture_event_count_;

content/browser/renderer_host/input/input_router_impl_unittest.cc

@@ -205,7 +205,8 @@ class MockInputRouterImplClient : public InputRouterImplClient {
 class InputRouterImplTestBase : public testing::Test {
  public:
   InputRouterImplTestBase()
-      : task_environment_(base::test::TaskEnvironment::MainThreadType::UI) {}
+      : task_environment_(
+            base::test::SingleThreadTaskEnvironment::MainThreadType::UI) {}
 
   ~InputRouterImplTestBase() override {}
 
@@ -498,7 +499,7 @@ class InputRouterImplTestBase : public testing::Test {
   std::unique_ptr<MockInputDispositionHandler> disposition_handler_;
 
  private:
-  base::test::TaskEnvironment task_environment_;
+  base::test::SingleThreadTaskEnvironment task_environment_;
   SyntheticWebTouchEvent touch_event_;
 };
 

content/browser/renderer_host/input/mouse_wheel_event_queue_unittest.cc

@@ -145,7 +145,8 @@ class MouseWheelEventQueueTest : public testing::Test,
                                  public MouseWheelEventQueueClient {
  public:
   MouseWheelEventQueueTest()
-      : task_environment_(base::test::TaskEnvironment::MainThreadType::UI),
+      : task_environment_(
+            base::test::SingleThreadTaskEnvironment::MainThreadType::UI),
         acked_event_count_(0),
         last_acked_event_state_(INPUT_EVENT_ACK_STATE_UNKNOWN) {
     queue_.reset(new MouseWheelEventQueue(this));
@@ -375,7 +376,7 @@ class MouseWheelEventQueueTest : public testing::Test,
     EXPECT_EQ(1U, GetAndResetSentEventCount());
   }
 
-  base::test::TaskEnvironment task_environment_;
+  base::test::SingleThreadTaskEnvironment task_environment_;
   std::unique_ptr<MouseWheelEventQueue> queue_;
   std::vector<std::unique_ptr<WebInputEvent>> sent_events_;
   size_t acked_event_count_;

content/browser/renderer_host/input/passthrough_touch_event_queue_unittest.cc

@@ -47,7 +47,8 @@ class PassthroughTouchEventQueueTest : public testing::Test,
                                        public PassthroughTouchEventQueueClient {
  public:
   PassthroughTouchEventQueueTest()
-      : task_environment_(base::test::TaskEnvironment::MainThreadType::UI),
+      : task_environment_(
+            base::test::SingleThreadTaskEnvironment::MainThreadType::UI),
         acked_event_count_(0),
         last_acked_event_state_(INPUT_EVENT_ACK_STATE_UNKNOWN),
         slop_length_dips_(0) {}
@@ -340,7 +341,7 @@ class PassthroughTouchEventQueueTest : public testing::Test,
     queue_->OnHasTouchEventHandlers(true);
   }
 
-  base::test::TaskEnvironment task_environment_;
+  base::test::SingleThreadTaskEnvironment task_environment_;
   std::unique_ptr<PassthroughTouchEventQueue> queue_;
   size_t acked_event_count_;
   WebTouchEvent last_acked_event_;

content/browser/renderer_host/input/touch_emulator_unittest.cc

@@ -32,7 +32,8 @@ class TouchEmulatorTest : public testing::Test,
                           public TouchEmulatorClient {
  public:
   TouchEmulatorTest()
-      : task_environment_(base::test::TaskEnvironment::MainThreadType::UI),
+      : task_environment_(
+            base::test::SingleThreadTaskEnvironment::MainThreadType::UI),
         last_event_time_(base::TimeTicks::Now()),
         event_time_delta_(base::TimeDelta::FromMilliseconds(100)),
         shift_pressed_(false),
@@ -253,7 +254,7 @@ class TouchEmulatorTest : public testing::Test,
   float GetCursorScaleFactor() { return cursor_.info().image_scale_factor; }
 
  private:
-  base::test::TaskEnvironment task_environment_;
+  base::test::SingleThreadTaskEnvironment task_environment_;
   std::unique_ptr<TouchEmulator> emulator_;
   std::vector<WebInputEvent::Type> forwarded_events_;
   base::TimeTicks last_event_time_;