[cc] Fix CompositorFrameSinkSupport BeginFrameAck interface.

cc/trees/layer_tree_host_impl_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/trees/layer_tree_host_impl.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <cmath>
@@ skipping 77 matching lines @@
 using ::testing::AnyNumber;
 using ::testing::AtLeast;
 using ::testing::_;
 using media::VideoFrame;
 
 namespace cc {
 namespace {
 
 struct TestFrameData : public LayerTreeHostImpl::FrameData {
   TestFrameData() {
-    // Set sequence number to something valid, so DCHECKs don't complain.
-    begin_frame_ack.sequence_number = 1;
+    // Set ack to something valid, so DCHECKs don't complain.
+    begin_frame_ack = BeginFrameAck(0, 1, 1, 0, true);
   }
 };
 
 class LayerTreeHostImplTest : public testing::Test,
                               public LayerTreeHostImplClient {
  public:
   LayerTreeHostImplTest()
       : task_runner_provider_(base::ThreadTaskRunnerHandle::Get()),
         always_main_thread_blocked_(&task_runner_provider_),
         on_can_draw_state_changed_called_(false),
@@ skipping 11954 matching lines @@
     else
       EXPECT_FALSE(tile->HasRasterTask());
   }
   Region expected_invalidation(
       raster_source->GetRectForImage(checkerable_image->uniqueID()));
   EXPECT_EQ(expected_invalidation, *(root->GetPendingInvalidation()));
 }
 
 }  // namespace
 }  // namespace cc