Don't process more than the queued events during rAF.

content/renderer/input/main_thread_event_queue_unittest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stddef.h>
 
 #include <new>
 #include <utility>
 #include <vector>
 
@@ skipping 403 matching lines @@
 
   for (SyntheticWebTouchEvent& event : kEvents)
     HandleEvent(event, INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
 
   EXPECT_EQ(3u, event_queue().size());
   EXPECT_TRUE(main_task_runner_->HasPendingTask());
   EXPECT_FALSE(needs_main_frame_);
   main_task_runner_->RunUntilIdle();
 }
 
-TEST_P(MainThreadEventQueueTest, RafAlignedMaxSize) {
-  // Don't run the test when we aren't supporting rAF aligned input.
-  if (!handle_raf_aligned_input_)
-    return;
-
-  const size_t kNumEventsToQueue = 16;
-  WebMouseWheelEvent mouseEvent =
-      SyntheticWebMouseWheelEventBuilder::Build(10, 10, 0, 53, 0, false);
-
-  EXPECT_FALSE(main_task_runner_->HasPendingTask());
-  EXPECT_EQ(0u, event_queue().size());
-
-  for (size_t i = 0; i < kNumEventsToQueue; ++i) {
-    mouseEvent.modifiers = i;
-    HandleEvent(mouseEvent, INPUT_EVENT_ACK_STATE_SET_NON_BLOCKING);
-  }
-
-  // There is a maximum number of events we handle in a rAF. kNumEventsToQueue
-  // exceeds that. Ensure that two rAF calls need to run.
-  EXPECT_EQ(kNumEventsToQueue, event_queue().size());
-  EXPECT_FALSE(main_task_runner_->HasPendingTask());
-  EXPECT_TRUE(needs_main_frame_);
-  RunSimulatedRafOnce();
-  EXPECT_TRUE(needs_main_frame_);
-  EXPECT_FALSE(main_task_runner_->HasPendingTask());
-  RunSimulatedRafOnce();
-  EXPECT_EQ(0u, event_queue().size());
-  EXPECT_FALSE(main_task_runner_->HasPendingTask());
-}
-
 TEST_P(MainThreadEventQueueTest, BlockingTouchesDuringFling) {
   SyntheticWebTouchEvent kEvents[1];
   kEvents[0].PressPoint(10, 10);
   kEvents[0].touchStartOrFirstTouchMove = true;
   set_is_flinging(true);
   set_enable_fling_passive_listener_flag(true);
 
   EXPECT_FALSE(last_touch_start_forced_nonblocking_due_to_fling());
   HandleEvent(kEvents[0], INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
   RunPendingTasksWithSimulatedRaf();
@@ skipping 126 matching lines @@
   EXPECT_EQ(kEvents[0], *last_touch_event);
 }
 
 // The boolean parameterized test varies whether rAF aligned input
 // is enabled or not.
 INSTANTIATE_TEST_CASE_P(MainThreadEventQueueTests,
                         MainThreadEventQueueTest,
                         testing::Bool());
 
 }  // namespace content