Splitting DidSwap in cc::SwapPromise into WillSwap and DidSwap

content/renderer/gpu/queue_message_swap_promise.cc

Index: content/renderer/gpu/queue_message_swap_promise.cc
diff --git a/content/renderer/gpu/queue_message_swap_promise.cc b/content/renderer/gpu/queue_message_swap_promise.cc
index 548214f167313bb4c3f4ad2e6fb9cfd9fc46ac1c..b7b3a8899d764a93cc293ac0a4a00fae023c5a90 100644
--- a/content/renderer/gpu/queue_message_swap_promise.cc
+++ b/content/renderer/gpu/queue_message_swap_promise.cc
@@ -57,7 +57,7 @@ void QueueMessageSwapPromise::DidActivate() {
   }
 }
 
-void QueueMessageSwapPromise::DidSwap(cc::CompositorFrameMetadata* metadata) {
+void QueueMessageSwapPromise::WillSwap(cc::CompositorFrameMetadata* metadata) {
 #if DCHECK_IS_ON()
   DCHECK(!completed_);
 #endif
@@ -66,6 +66,8 @@ void QueueMessageSwapPromise::DidSwap(cc::CompositorFrameMetadata* metadata) {
   PromiseCompleted();
 }
 
+void QueueMessageSwapPromise::DidSwap() {}
+
 cc::SwapPromise::DidNotSwapAction QueueMessageSwapPromise::DidNotSwap(
     DidNotSwapReason reason) {
 #if DCHECK_IS_ON()