[cc] Add and use BeginFrameAck for DidFinishFrame.

cc/scheduler/begin_frame_source_unittest.cc

 // Copyright 2011 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 "cc/scheduler/begin_frame_source.h"
 
 #include <stdint.h>
 
 #include "base/memory/ptr_util.h"
 #include "base/test/test_simple_task_runner.h"
@@ skipping 55 matching lines @@
   EXPECT_BEGIN_FRAME_SOURCE_PAUSED(*obs_, false);
   source_->AddObserver(obs_.get());
   EXPECT_TRUE(task_runner_->HasPendingTasks());
   EXPECT_BEGIN_FRAME_USED(*obs_, source_->source_id(), 1, 1000,
                           1000 + kDeadline, kInterval);
   task_runner_->RunPendingTasks();
 
   EXPECT_BEGIN_FRAME_USED(*obs_, source_->source_id(), 2, 1100,
                           1100 + kDeadline, kInterval);
   now_src_->Advance(base::TimeDelta::FromMicroseconds(100));
-  source_->DidFinishFrame(obs_.get(), 0);
+  source_->DidFinishFrame(obs_.get(),
+                          BeginFrameAck(source_->source_id(), 1, 1, 0, true));
   task_runner_->RunPendingTasks();
 }
 
 TEST_F(BackToBackBeginFrameSourceTest,
        RemoveObserverThenDidFinishFrameProducesNoFrame) {
   EXPECT_BEGIN_FRAME_SOURCE_PAUSED(*obs_, false);
   source_->AddObserver(obs_.get());
   EXPECT_BEGIN_FRAME_USED(*obs_, source_->source_id(), 1, 1000,
                           1000 + kDeadline, kInterval);
   task_runner_->RunPendingTasks();
 
   source_->RemoveObserver(obs_.get());
-  source_->DidFinishFrame(obs_.get(), 0);
+  source_->DidFinishFrame(obs_.get(),
+                          BeginFrameAck(source_->source_id(), 1, 1, 0, true));
 
   // Verify no BeginFrame is sent to |obs_|. There is a pending task in the
   // task_runner_ as a BeginFrame was posted, but it gets aborted since |obs_|
   // is removed.
   task_runner_->RunPendingTasks();
   EXPECT_FALSE(task_runner_->HasPendingTasks());
 }
 
 TEST_F(BackToBackBeginFrameSourceTest,
        DidFinishFrameThenRemoveObserverProducesNoFrame) {
   EXPECT_BEGIN_FRAME_SOURCE_PAUSED(*obs_, false);
   source_->AddObserver(obs_.get());
   EXPECT_BEGIN_FRAME_USED(*obs_, source_->source_id(), 1, 1000,
                           1000 + kDeadline, kInterval);
   task_runner_->RunPendingTasks();
 
   now_src_->Advance(base::TimeDelta::FromMicroseconds(100));
-  source_->DidFinishFrame(obs_.get(), 0);
+  source_->DidFinishFrame(obs_.get(),
+                          BeginFrameAck(source_->source_id(), 1, 1, 0, true));
   source_->RemoveObserver(obs_.get());
 
   EXPECT_TRUE(task_runner_->HasPendingTasks());
   task_runner_->RunPendingTasks();
 }
 
 TEST_F(BackToBackBeginFrameSourceTest,
        TogglingObserverThenDidFinishFrameProducesCorrectFrame) {
   EXPECT_BEGIN_FRAME_SOURCE_PAUSED(*obs_, false);
   source_->AddObserver(obs_.get());
   EXPECT_BEGIN_FRAME_USED(*obs_, source_->source_id(), 1, 1000,
                           1000 + kDeadline, kInterval);
   task_runner_->RunPendingTasks();
 
   now_src_->Advance(base::TimeDelta::FromMicroseconds(100));
   source_->RemoveObserver(obs_.get());
 
   now_src_->Advance(base::TimeDelta::FromMicroseconds(10));
   EXPECT_BEGIN_FRAME_SOURCE_PAUSED(*obs_, false);
   source_->AddObserver(obs_.get());
 
   now_src_->Advance(base::TimeDelta::FromMicroseconds(10));
-  source_->DidFinishFrame(obs_.get(), 0);
+  source_->DidFinishFrame(obs_.get(),
+                          BeginFrameAck(source_->source_id(), 1, 1, 0, true));
 
   now_src_->Advance(base::TimeDelta::FromMicroseconds(10));
   // The begin frame is posted at the time when the observer was added,
   // so it ignores changes to "now" afterward.
   EXPECT_BEGIN_FRAME_USED(*obs_, source_->source_id(), 2, 1110,
                           1110 + kDeadline, kInterval);
   EXPECT_TRUE(task_runner_->HasPendingTasks());
   task_runner_->RunPendingTasks();
 }
 
 TEST_F(BackToBackBeginFrameSourceTest,
        DidFinishFrameThenTogglingObserverProducesCorrectFrame) {
   EXPECT_BEGIN_FRAME_SOURCE_PAUSED(*obs_, false);
   source_->AddObserver(obs_.get());
   EXPECT_BEGIN_FRAME_USED(*obs_, source_->source_id(), 1, 1000,
                           1000 + kDeadline, kInterval);
   task_runner_->RunPendingTasks();
 
   now_src_->Advance(base::TimeDelta::FromMicroseconds(100));
-  source_->DidFinishFrame(obs_.get(), 0);
+  source_->DidFinishFrame(obs_.get(),
+                          BeginFrameAck(source_->source_id(), 1, 1, 0, true));
 
   now_src_->Advance(base::TimeDelta::FromMicroseconds(10));
   source_->RemoveObserver(obs_.get());
 
   now_src_->Advance(base::TimeDelta::FromMicroseconds(10));
   EXPECT_BEGIN_FRAME_SOURCE_PAUSED(*obs_, false);
   source_->AddObserver(obs_.get());
 
   now_src_->Advance(base::TimeDelta::FromMicroseconds(10));
   // Ticks at the time at which the observer was added, ignoring the
   // last change to "now".
   EXPECT_BEGIN_FRAME_USED(*obs_, source_->source_id(), 2, 1120,
                           1120 + kDeadline, kInterval);
   EXPECT_TRUE(task_runner_->HasPendingTasks());
   task_runner_->RunPendingTasks();
 }
 
 TEST_F(BackToBackBeginFrameSourceTest, DidFinishFrameNoObserver) {
   EXPECT_BEGIN_FRAME_SOURCE_PAUSED(*obs_, false);
   source_->AddObserver(obs_.get());
   source_->RemoveObserver(obs_.get());
-  source_->DidFinishFrame(obs_.get(), 0);
+  source_->DidFinishFrame(obs_.get(),
+                          BeginFrameAck(source_->source_id(), 1, 1, 0, true));
   EXPECT_FALSE(task_runner_->RunPendingTasks());
 }
 
 TEST_F(BackToBackBeginFrameSourceTest, DidFinishFrameRemainingFrames) {
   EXPECT_BEGIN_FRAME_SOURCE_PAUSED(*obs_, false);
   source_->AddObserver(obs_.get());
   EXPECT_BEGIN_FRAME_USED(*obs_, source_->source_id(), 1, 1000,
                           1000 + kDeadline, kInterval);
   // Runs the pending begin frame.
   task_runner_->RunPendingTasks();
   // While running the begin frame, the next frame was cancelled, this
   // runs the next frame, sees it was cancelled, and goes to sleep.
   task_runner_->RunPendingTasks();
   EXPECT_FALSE(task_runner_->HasPendingTasks());
 
   now_src_->Advance(base::TimeDelta::FromMicroseconds(100));
 
-  source_->DidFinishFrame(obs_.get(), 3);
+  source_->DidFinishFrame(obs_.get(),
+                          BeginFrameAck(source_->source_id(), 1, 1, 3, true));
   EXPECT_FALSE(task_runner_->HasPendingTasks());
-  source_->DidFinishFrame(obs_.get(), 2);
+  source_->DidFinishFrame(obs_.get(),
+                          BeginFrameAck(source_->source_id(), 1, 1, 2, true));
   EXPECT_FALSE(task_runner_->HasPendingTasks());
-  source_->DidFinishFrame(obs_.get(), 1);
+  source_->DidFinishFrame(obs_.get(),
+                          BeginFrameAck(source_->source_id(), 1, 1, 1, true));
   EXPECT_FALSE(task_runner_->HasPendingTasks());
 
   EXPECT_BEGIN_FRAME_USED(*obs_, source_->source_id(), 2, 1100,
                           1100 + kDeadline, kInterval);
-  source_->DidFinishFrame(obs_.get(), 0);
+  source_->DidFinishFrame(obs_.get(),
+                          BeginFrameAck(source_->source_id(), 1, 1, 0, true));
   EXPECT_EQ(base::TimeDelta(), task_runner_->DelayToNextTaskTime());
   task_runner_->RunPendingTasks();
 }
 
 TEST_F(BackToBackBeginFrameSourceTest, DidFinishFrameMultipleCallsIdempotent) {
   EXPECT_BEGIN_FRAME_SOURCE_PAUSED(*obs_, false);
   source_->AddObserver(obs_.get());
   EXPECT_BEGIN_FRAME_USED(*obs_, source_->source_id(), 1, 1000,
                           1000 + kDeadline, kInterval);
   task_runner_->RunPendingTasks();
 
   now_src_->Advance(base::TimeDelta::FromMicroseconds(100));
-  source_->DidFinishFrame(obs_.get(), 0);
-  source_->DidFinishFrame(obs_.get(), 0);
-  source_->DidFinishFrame(obs_.get(), 0);
+  source_->DidFinishFrame(obs_.get(),
+                          BeginFrameAck(source_->source_id(), 1, 1, 0, true));
+  source_->DidFinishFrame(obs_.get(),
+                          BeginFrameAck(source_->source_id(), 1, 1, 0, true));
+  source_->DidFinishFrame(obs_.get(),
+                          BeginFrameAck(source_->source_id(), 1, 1, 0, true));
   EXPECT_BEGIN_FRAME_USED(*obs_, source_->source_id(), 2, 1100,
                           1100 + kDeadline, kInterval);
   task_runner_->RunPendingTasks();
 
   now_src_->Advance(base::TimeDelta::FromMicroseconds(100));
-  source_->DidFinishFrame(obs_.get(), 0);
-  source_->DidFinishFrame(obs_.get(), 0);
-  source_->DidFinishFrame(obs_.get(), 0);
+  source_->DidFinishFrame(obs_.get(),
+                          BeginFrameAck(source_->source_id(), 2, 2, 0, true));
+  source_->DidFinishFrame(obs_.get(),
+                          BeginFrameAck(source_->source_id(), 2, 2, 0, true));
+  source_->DidFinishFrame(obs_.get(),
+                          BeginFrameAck(source_->source_id(), 2, 2, 0, true));
   EXPECT_BEGIN_FRAME_USED(*obs_, source_->source_id(), 3, 1200,
                           1200 + kDeadline, kInterval);
   task_runner_->RunPendingTasks();
 }
 
 TEST_F(BackToBackBeginFrameSourceTest, DelayInPostedTaskProducesCorrectFrame) {
   EXPECT_BEGIN_FRAME_SOURCE_PAUSED(*obs_, false);
   source_->AddObserver(obs_.get());
   EXPECT_BEGIN_FRAME_USED(*obs_, source_->source_id(), 1, 1000,
                           1000 + kDeadline, kInterval);
   task_runner_->RunPendingTasks();
 
   now_src_->Advance(base::TimeDelta::FromMicroseconds(100));
-  source_->DidFinishFrame(obs_.get(), 0);
+  source_->DidFinishFrame(obs_.get(),
+                          BeginFrameAck(source_->source_id(), 1, 1, 0, true));
   now_src_->Advance(base::TimeDelta::FromMicroseconds(50));
   // Ticks at the time the last frame finished, so ignores the last change to
   // "now".
   EXPECT_BEGIN_FRAME_USED(*obs_, source_->source_id(), 2, 1100,
                           1100 + kDeadline, kInterval);
 
   EXPECT_TRUE(task_runner_->HasPendingTasks());
   task_runner_->RunPendingTasks();
 }
 
 TEST_F(BackToBackBeginFrameSourceTest, MultipleObserversSynchronized) {
   StrictMock<MockBeginFrameObserver> obs1, obs2;
 
   EXPECT_BEGIN_FRAME_SOURCE_PAUSED(obs1, false);
   source_->AddObserver(&obs1);
   EXPECT_BEGIN_FRAME_SOURCE_PAUSED(obs2, false);
   source_->AddObserver(&obs2);
 
   EXPECT_BEGIN_FRAME_USED(obs1, source_->source_id(), 1, 1000, 1000 + kDeadline,
                           kInterval);
   EXPECT_BEGIN_FRAME_USED(obs2, source_->source_id(), 1, 1000, 1000 + kDeadline,
                           kInterval);
   task_runner_->RunPendingTasks();
 
   now_src_->Advance(base::TimeDelta::FromMicroseconds(100));
-  source_->DidFinishFrame(&obs1, 0);
-  source_->DidFinishFrame(&obs2, 0);
+  source_->DidFinishFrame(&obs1,
+                          BeginFrameAck(source_->source_id(), 1, 1, 0, true));
+  source_->DidFinishFrame(&obs2,
+                          BeginFrameAck(source_->source_id(), 1, 1, 0, true));
   EXPECT_BEGIN_FRAME_USED(obs1, source_->source_id(), 2, 1100, 1100 + kDeadline,
                           kInterval);
   EXPECT_BEGIN_FRAME_USED(obs2, source_->source_id(), 2, 1100, 1100 + kDeadline,
                           kInterval);
   task_runner_->RunPendingTasks();
 
   now_src_->Advance(base::TimeDelta::FromMicroseconds(100));
-  source_->DidFinishFrame(&obs1, 0);
-  source_->DidFinishFrame(&obs2, 0);
+  source_->DidFinishFrame(&obs1,
+                          BeginFrameAck(source_->source_id(), 2, 2, 0, true));
+  source_->DidFinishFrame(&obs2,
+                          BeginFrameAck(source_->source_id(), 2, 2, 0, true));
   EXPECT_TRUE(task_runner_->HasPendingTasks());
   source_->RemoveObserver(&obs1);
   source_->RemoveObserver(&obs2);
   task_runner_->RunPendingTasks();
 }
 
 TEST_F(BackToBackBeginFrameSourceTest, MultipleObserversInterleaved) {
   StrictMock<MockBeginFrameObserver> obs1, obs2;
 
   EXPECT_BEGIN_FRAME_SOURCE_PAUSED(obs1, false);
   source_->AddObserver(&obs1);
   EXPECT_BEGIN_FRAME_USED(obs1, source_->source_id(), 1, 1000, 1000 + kDeadline,
                           kInterval);
   task_runner_->RunPendingTasks();
 
   now_src_->Advance(base::TimeDelta::FromMicroseconds(100));
   EXPECT_BEGIN_FRAME_SOURCE_PAUSED(obs2, false);
   source_->AddObserver(&obs2);
   EXPECT_BEGIN_FRAME_USED(obs2, source_->source_id(), 2, 1100, 1100 + kDeadline,
                           kInterval);
   task_runner_->RunPendingTasks();
 
   now_src_->Advance(base::TimeDelta::FromMicroseconds(100));
-  source_->DidFinishFrame(&obs1, 0);
+  source_->DidFinishFrame(&obs1,
+                          BeginFrameAck(source_->source_id(), 1, 1, 0, true));
   EXPECT_BEGIN_FRAME_USED(obs1, source_->source_id(), 3, 1200, 1200 + kDeadline,
                           kInterval);
   task_runner_->RunPendingTasks();
 
-  source_->DidFinishFrame(&obs1, 0);
+  source_->DidFinishFrame(&obs1,
+                          BeginFrameAck(source_->source_id(), 3, 3, 0, true));
   source_->RemoveObserver(&obs1);
   // Removing all finished observers should disable the time source.
   EXPECT_FALSE(delay_based_time_source_->Active());
   // Finishing the frame for |obs1| posts a begin frame task, which will be
   // aborted since |obs1| is removed. Clear that from the task runner.
   task_runner_->RunPendingTasks();
 
   now_src_->Advance(base::TimeDelta::FromMicroseconds(100));
-  source_->DidFinishFrame(&obs2, 0);
+  source_->DidFinishFrame(&obs2,
+                          BeginFrameAck(source_->source_id(), 2, 2, 0, true));
   EXPECT_BEGIN_FRAME_USED(obs2, source_->source_id(), 4, 1300, 1300 + kDeadline,
                           kInterval);
   task_runner_->RunPendingTasks();
 
-  source_->DidFinishFrame(&obs2, 0);
+  source_->DidFinishFrame(&obs2,
+                          BeginFrameAck(source_->source_id(), 4, 4, 0, true));
   source_->RemoveObserver(&obs2);
 }
 
 TEST_F(BackToBackBeginFrameSourceTest, MultipleObserversAtOnce) {
   StrictMock<MockBeginFrameObserver> obs1, obs2;
 
   EXPECT_BEGIN_FRAME_SOURCE_PAUSED(obs1, false);
   EXPECT_BEGIN_FRAME_SOURCE_PAUSED(obs2, false);
   source_->AddObserver(&obs1);
   source_->AddObserver(&obs2);
   EXPECT_BEGIN_FRAME_USED(obs1, source_->source_id(), 1, 1000, 1000 + kDeadline,
                           kInterval);
   EXPECT_BEGIN_FRAME_USED(obs2, source_->source_id(), 1, 1000, 1000 + kDeadline,
                           kInterval);
   task_runner_->RunPendingTasks();
 
   // |obs1| finishes first.
   now_src_->Advance(base::TimeDelta::FromMicroseconds(100));
-  source_->DidFinishFrame(&obs1, 0);
+  source_->DidFinishFrame(&obs1,
+                          BeginFrameAck(source_->source_id(), 1, 1, 0, true));
 
   // |obs2| finishes also, before getting to the newly posted begin frame.
   now_src_->Advance(base::TimeDelta::FromMicroseconds(100));
-  source_->DidFinishFrame(&obs2, 0);
+  source_->DidFinishFrame(&obs2,
+                          BeginFrameAck(source_->source_id(), 1, 1, 0, true));
 
   // Because the begin frame source already ticked when |obs1| finished,
   // we see it as the frame time for both observers.
   EXPECT_BEGIN_FRAME_USED(obs1, source_->source_id(), 2, 1100, 1100 + kDeadline,
                           kInterval);
   EXPECT_BEGIN_FRAME_USED(obs2, source_->source_id(), 2, 1100, 1100 + kDeadline,
                           kInterval);
   task_runner_->RunPendingTasks();
 
-  source_->DidFinishFrame(&obs1, 0);
+  source_->DidFinishFrame(&obs1,
+                          BeginFrameAck(source_->source_id(), 2, 2, 0, true));
   source_->RemoveObserver(&obs1);
-  source_->DidFinishFrame(&obs2, 0);
+  source_->DidFinishFrame(&obs2,
+                          BeginFrameAck(source_->source_id(), 2, 2, 0, true));
   source_->RemoveObserver(&obs2);
 }
 
 // DelayBasedBeginFrameSource testing ------------------------------------------
 class DelayBasedBeginFrameSourceTest : public ::testing::Test {
  public:
   std::unique_ptr<base::SimpleTestTickClock> now_src_;
   scoped_refptr<OrderedSimpleTaskRunner> task_runner_;
   std::unique_ptr<DelayBasedBeginFrameSource> source_;
   std::unique_ptr<MockBeginFrameObserver> obs_;
@@ skipping 187 matching lines @@
   // Sequence number is incremented again, because the missed frame has
   // different time/interval.
   EXPECT_BEGIN_FRAME_USED_MISSED(obs, source_->source_id(), 3, 10000, 20000,
                                  10000);
   source_->AddObserver(&obs);
   source_->RemoveObserver(&obs);
 }
 
 }  // namespace
 }  // namespace cc