Splitting DidSwap in cc::SwapPromise into WillSwap and DidSwap

content/renderer/render_view_impl.cc

 // Copyright (c) 2012 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 "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <memory>
 
@@ skipping 493 matching lines @@
 // |DidNotSwapReason::SWAP_FAILS| events.
 class AlwaysDrawSwapPromise : public cc::SwapPromise {
  public:
   explicit AlwaysDrawSwapPromise(const ui::LatencyInfo& latency_info)
       : latency_info_(latency_info) {}
 
   ~AlwaysDrawSwapPromise() override = default;
 
   void DidActivate() override {}
 
-  void DidSwap(cc::CompositorFrameMetadata* metadata) override {
+  void WillSwap(cc::CompositorFrameMetadata* metadata) override {
     DCHECK(!latency_info_.terminated());
     metadata->latency_info.push_back(latency_info_);
   }
 
+  void DidSwap() override {}
+
   DidNotSwapAction DidNotSwap(DidNotSwapReason reason) override {
     return reason == DidNotSwapReason::SWAP_FAILS
                ? DidNotSwapAction::KEEP_ACTIVE
                : DidNotSwapAction::BREAK_PROMISE;
   }
 
   void OnCommit() override {}
 
   int64_t TraceId() const override { return latency_info_.trace_id(); }
 
@@ skipping 2292 matching lines @@
                             INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
   }
 
   std::unique_ptr<InputEventAck> ack(
       new InputEventAck(InputEventAckSource::MAIN_THREAD, input_event->type,
                         INPUT_EVENT_ACK_STATE_NOT_CONSUMED));
   OnInputEventAck(std::move(ack));
 }
 
 }  // namespace content