Splitting DidSwap in cc::SwapPromise into WillSwap and DidSwap

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index 35f971e79c67630b0d3912bad947d85c764db4e3..d894c0b0a97a6c4dc4c25eab7edc3c9ec606b869 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -511,11 +511,13 @@ class AlwaysDrawSwapPromise : public cc::SwapPromise {
 
   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